CBSE Class 7 Mathematics Number Play MCQs Set E

Question. When constructing a triangle with sides 4 cm, 5 cm, and 8 cm, why do the circles intersect?
(a) Sum of smaller sides equals the longest side
(b) Sum of smaller sides is less than the longest side
(c) Sum of smaller sides is greater than the longest side
(d) Sum of smaller sides is zero

Answer: C

Question. These numbers were first discovered by ancient scholars in India during their study of what subject?
(a) Arithmetic
(b) Geometry
(c) Poetry
(d) Astronomy

Answer: C

Question. Look at the Virahanka sequence: 1, 2, 3, 5, 8, 13, 21, 34, 55, ... What is the repeating pattern of Odd (O) and Even (E) numbers in the sequence?
(a) O, O, E
(b) O, E, O
(c) O, E, O, O, E
(d) O, E, O, O, E, O, O, E

Answer: D

Question. For a grid with dimensions 135 x 654, the total number of small squares will have what parity?
(a) Always Odd
(b) Always Even
(c) Prime number
(d) Cannot find value

Answer: B

Question. If both dimensions (length and width) of a grid are odd numbers, the total number of small squares will have what parity?
(a) Always Even
(b) Always Odd
(c) Always Prime
(d) Depends on addition

Answer: B

Question. What happens when the sum of the two smaller side lengths equals the longest side length?
(a) Circles intersect internally
(b) Circles touch each other at a point
(c) Circles do not intersect
(d) A right-angled triangle is formed

Answer: B

Question. If a very big odd number is subtracted from a very big odd number, the result parity is?
(a) Odd
(b) Even
(c) Always 1
(d) Cannot tell

Answer: B

Question. If a very big even number is subtracted from a very big odd number, the result parity is?
(a) Even
(b) Odd
(c) Zero
(d) Always 10

Answer: B

Question. Which expression always gives a number with even parity, for any whole number n?
(a) 2n
(b) 2n + 1
(c) 3n + 4
(d) 5n

Answer: A

Question. An expression that will always result in an odd number is?
(a) 100n
(b) 2n + 4
(c) 4m - 1
(d) 6j - 4

Answer: C

Question. Which set of side lengths results in circles that do not intersect during construction?
(a) 4 cm, 5 cm, 8 cm
(b) 2 cm, 3 cm, 6 cm
(c) 3 cm, 4 cm, 7 cm
(d) 5 cm, 5 cm, 8 cm

Answer: B

Question. The algebraic expression 3n + 4 can sometimes give odd parity and sometimes give even parity. This happens when n is what?
(a) Only when n is 1
(b) When n is odd or n is even
(c) Never happens
(d) Only when n is negative

Answer: B

Question. The formula to find the nth odd number is what?
(a) 2n
(b) n+1
(c) 2n - 1
(d) n x 2

Answer: C

Question. When a 3 x 3 grid is filled with numbers 1 to 9 without repeating, the total sum of all the numbers in the grid is what value?
(a) 9
(b) 15
(c) 45
(d) 90

Answer: C

Question. In a 3 x 3 grid (numbers 1-9), the sum of all three row sums added together is always equal to what?
(a) The magic sum times 3
(b) The sum of numbers 1 to 9
(c) The center number times 9
(d) 90

Answer: B

Question. What is the sum of the angles in any triangle?
(a) 90°
(b) 180°
(c) 270°
(d) 360°

Answer: B

Question. For a magic square using the numbers 1 to 9, the magic sum for each row, column, and diagonal must be what number?
(a) 9
(b) 30
(c) 15
(d) 45

Answer: C

Question. When trying to make a 3 x 3 magic square (1-9), we find that the number 9 cannot be placed where?
(a) Top row
(b) Bottom row
(c) The center
(d) Corner position

Answer: C

Question. The number that must be exactly at the center of a 3 x 3 magic square using numbers 1 to 9 is what number?
(a) 1
(b) 9
(c) 5
(d) 15

Answer: C

Question. The numbers 1 and 9 cannot occur in which position in a 3 x 3 magic square (1-9)?
(a) The center position
(b) The middle side positions
(c) Any corner position
(d) Any boundary position

Answer: C