Letter and Symbol Series Aptitude MCQ Questions with Answers Set 03

Answer: (d) tsst

Explanation:
1. Fill the blanks with t, s, s, t in order.
2. The series becomes: tst / tst / tst / tst.
3. The block 'tst' repeats four times.

Teacher's Note:
1. Count the total letters with blanks and try lengths like 3, 4 or 5 for the repeating block.
2. Fill the options one by one only after spotting the block; the correct choice makes every block identical or follow one clear growth rule.

Answer: (a) acab

Explanation:
1. Fill the blanks with a, c, a, b in order.
2. The series becomes: bcaa / bcaa / bcaa / bcaa.
3. The block 'bcaa' repeats four times.

Teacher's Note:
1. Count the total letters with blanks and try lengths like 3, 4 or 5 for the repeating block.
2. Fill the options one by one only after spotting the block; the correct choice makes every block identical or follow one clear growth rule.

Answer: (b) caaa

Explanation:
1. Fill the blanks with c, a, a, a in order.
2. The series becomes: ca / ccaa / cccaaa / ccccaaaa.
3. Each block has one more c and one more a than the one before.

Teacher's Note:
1. Count the total letters with blanks and try lengths like 3, 4 or 5 for the repeating block.
2. Fill the options one by one only after spotting the block; the correct choice makes every block identical or follow one clear growth rule.

Answer: (d) aabba

Explanation:
1. Fill the blanks with a, a, b, b, a in order.
2. The series becomes: baac / accb / cbba / baac.
3. Each block begins with the last letter of the previous block and the four-block cycle repeats.

Teacher's Note:
1. Count the total letters with blanks and try lengths like 3, 4 or 5 for the repeating block.
2. Fill the options one by one only after spotting the block; the correct choice makes every block identical or follow one clear growth rule.

Answer: (d) inu

Explanation:
1. e-l-u runs diagonally down to the right from e (left end of row 3) to u; a-d-i is the right edge of the pyramid, also running down to the right.
2. a-b-e is the left edge of the pyramid, the mirror image of a-d-i.
3. The mirror image of e-l-u is i-n-u, running diagonally down to the left from i (right end of row 3) to u.
4. Hence the answer is inu.

Teacher's Note:
1. Copy the pyramid on rough paper and trace each letter group with your pencil; the shape it makes (line, L, cross, V) is the real relationship.
2. Check direction as well as shape: a mirror-image or reversed path usually separates the correct option from the distractors.

Answer: (c) nop

Explanation:
1. f-l-t is a vertical line with middle letter l; k-l-m is a horizontal line with the same middle letter l, so the two cross like a plus sign.
2. i-o-w is a vertical line with middle letter o.
3. The horizontal line with o in the middle is n-o-p.
4. Hence the answer is nop.

Teacher's Note:
1. Copy the pyramid on rough paper and trace each letter group with your pencil; the shape it makes (line, L, cross, V) is the real relationship.
2. Check direction as well as shape: a mirror-image or reversed path usually separates the correct option from the distractors.

Answer: (b) stu

Explanation:
1. e-f-g is a straight line ending at g, and g-m-u starts at g and runs at right angles to it.
2. e-k-s is a straight vertical line ending at s.
3. The group that starts at s and runs at right angles is s-t-u along the bottom row.
4. Hence the answer is stu.

Teacher's Note:
1. Copy the pyramid on rough paper and trace each letter group with your pencil; the shape it makes (line, L, cross, V) is the real relationship.
2. Check direction as well as shape: a mirror-image or reversed path usually separates the correct option from the distractors.

Answer: (b) ion

Explanation:
1. y-x-p goes left along the bottom row from y and then up to p; q-r-j is its exact mirror image on the left side.
2. e-k-l goes down from e to k and then right to l.
3. Its mirror image on the right side goes down from i to o and then left to n.
4. Hence the answer is ion.

Teacher's Note:
1. Copy the pyramid on rough paper and trace each letter group with your pencil; the shape it makes (line, L, cross, V) is the real relationship.
2. Check direction as well as shape: a mirror-image or reversed path usually separates the correct option from the distractors.

Answer: (b) cho

Explanation:
1. c-f-k runs diagonally down-left from c to k, and k-t-z runs diagonally down-right from k to z, making a V-like bend.
2. o-v-z runs diagonally down-left from o to z.
3. The line that runs diagonally down-right from c to o is c-h-o (the mirror of c-f-k).
4. Hence the answer is cho.

Teacher's Note:
1. Copy the pyramid on rough paper and trace each letter group with your pencil; the shape it makes (line, L, cross, V) is the real relationship.
2. Check direction as well as shape: a mirror-image or reversed path usually separates the correct option from the distractors.

Answer: (a) C

Explanation:
1. In each row, the centre letter's value equals the sum of the left and right letters.
2. Row 1: B(2) + O(15) = 17 = Q. Row 2: F(6) + J(10) = 16 = P.
3. Row 3: U(21) + ? = X(24), so ? = 3 = C.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) P

Explanation:
1. Read each circle clockwise from the top-left letter.
2. Circle 1: A, D, H, M (gaps +3, +4, +5). Circle 2: B, D, G, K (gaps +2, +3, +4).
3. Circle 3: J, K, M, ? (gaps +1, +2, +3), so ? = M(13) + 3 = 16 = P.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) X

Explanation:
1. B(2), F(6), K(11), Q(17): the gaps are +4, +5, +6.
2. The next gap is +7: 17 + 7 = 24 = X.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (c) U

Explanation:
1. In each column, the bottom letter's value equals the sum of the two letters above it.
2. Column 1: B(2) + J(10) = 12 = L. Column 2: G(7) + L(12) = 19 = S.
3. Column 3: F(6) + O(15) = 21 = U.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (a) C

Explanation:
1. The letters run in alphabetical order along a zig-zag path: row 1 left to right, row 2 right to left, row 3 left to right.
2. Row 1: A, B, ?; row 2 (right to left): D, E, F; row 3: G, H, I.
3. So the blank is C.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) M

Explanation:
1. In each figure, the centre letter lies exactly midway between the two letters at the ends of each diagonal.
2. Figure 1: I(9) and Q(17) average 13 = M; U(21) and E(5) also average 13. Figure 2: E(5) and I(9), K(11) and C(3) average 7 = G.
3. Figure 3: centre R(18); O(15) and U(21) average 18, so ? and W(23) must average 18: ? = 36 - 23 = 13 = M.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) X

Explanation:
1. In each row, the middle letter lies midway between the left and right letters.
2. Row 1: H(8) and T(20) give 14 = N. Row 2: O(15) and W(23) give 19 = S.
3. Row 3: V(22) and Z(26) give 24 = X.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) E & S

Explanation:
1. Read the left-hand letters down each domino, moving from domino to domino: A, C, ?, G, I, K - steps of 2, so the first missing letter is E.
2. Then read the right-hand letters back up: M, O, Q, ?, U, W - steps of 2, so the second missing letter is S.
3. So the missing letters are E and S.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (c) W and E

Explanation:
1. In each circle, top-left + 5 = bottom-left, and top-right + 2 = bottom-right.
2. Check: E(5) + 5 = J, Q(17) + 2 = S; P + 5 = U, J + 2 = L; E + 5 = J, I + 2 = K.
3. Fourth circle: R(18) + 5 = W(23), and W + 2 = Y fits. Fifth circle: N + 5 = S fits, and C(3) + 2 = E.
4. So the missing letters are W and E.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (c) R

Explanation:
1. In each column, the bottom letter's value equals the sum of the top and middle letters.
2. Q(17) + C(3) = 20 = T; J(10) + K(11) = 21 = U.
3. D(4) + N(14) = 18 = R.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) S

Explanation:
1. In each circle, the bottom letter's value equals the sum of the two top letters.
2. A(1) + G(7) = 8 = H; F(6) + J(10) = 16 = P.
3. For the third circle: ? + B(2) = U(21), so ? = 19 = S.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) L

Explanation:
1. Letters at the two ends of each straight line are a pair: one is as far from the start of the alphabet as the other is from the end, so their values add up to 27.
2. I(9) + R(18) = 27, S(19) + H(8) = 27, B(2) + Y(25) = 27.
3. So O(15) pairs with 27 - 15 = 12 = L.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) M

Explanation:
1. In each column, the bottom letter equals the sum of the top and centre letters.
2. M(13) + C(3) = 16 = P; J(10) + N(14) = 24 = X.
3. E(5) + H(8) = 13 = M.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) F

Explanation:
1. In each column, top letter minus middle letter gives the bottom letter.
2. T(20) - D(4) = 16 = P; H(8) - A(1) = 7 = G.
3. Q(17) - K(11) = 6 = F.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) F

Explanation:
1. Start at U and move clockwise: U(21), T(20), R(18), O(15), K(11).
2. The steps back are 1, 2, 3, 4, so the next step is 5.
3. 11 - 5 = 6 = F.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (c) E

Explanation:
1. In each row, left letter minus middle letter gives the right letter.
2. M(13) - F(6) = 7 = G; P(16) - L(12) = 4 = D.
3. W(23) - R(18) = 5 = E.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) H

Explanation:
1. The corner letter each outer square shares with the central square gives the step size; the other three letters of that square go up in that step.
2. Top-left square, step E(5): G, L, Q. Top-right square, step C(3): M, P, S. Bottom-left square, step B(2): F, H, J.
3. Bottom-right square: C(3), K(11), S(19) go up in steps of 8, so ? = H (8).

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) K

Explanation:
1. Read each star clockwise: first star L, O, C, F, I goes up in steps of 3 (wrapping after Z).
2. Second star O, S, C, G, K goes up in steps of 4.
3. Third star, starting at C: C, E, G, I, ? goes up in steps of 2, so ? = K.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (d) J

Explanation:
1. In each row, the right letter's value is the difference between the left and centre letters.
2. K(11), Q(17): 6 = F. R(18), Y(25): 7 = G. M(13), B(2): 11 = K.
3. O(15), E(5): 15 - 5 = 10 = J.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).

Answer: (b) J

Explanation:
1. Moving clockwise from B, each letter is 10 places after the previous one, wrapping round after Z.
2. B(2), L(12), V(22), F(32-26 = 6), P(16), Z(26).
3. Next: 26 + 10 = 36 - 26 = 10 = J, and then T(20), D(4), N(14) follow correctly.

Teacher's Note:
1. Change every letter to its alphabet position and test sums, differences and steps along rows, columns and around circles.
2. When a total goes past 26, subtract 26 (the alphabet wraps round from Z to A).