CBSE Class 6 Mathematics Playing with Numbers Assignments Set B

Question. Karishma listed all the factors of her age and her brother listed all the factors of his age. They found that the numbers 1, 2 and 3 were there in Both the list.  What could be their ages (in years)?
(a) 9 and 12
(b) 10 and 12
(c) 12 and 16
(d) 18 and 12

Answer : D

Question. You have to make a 3-digit number using the number cards below. The number you form will DEFINITELY be

(a) Prime
(b) Composite
(c) Odd
(d) Even

Answer : B

Question. How many numbers between 50 and 100 are completely divisible by 8?
(a) 5
(b) 6
(c) 8
(d) 10

Answer : B

Question. The LARGEST 3-digit common multiple of 70 and 50 is
(a) 350
(b) 700
(c) 980
(d) 950

Answer : B

Question. I think of a number, add 10 to it and divide the answer by 2. Let the resulting number is image shown here how can I get my original number back?

(a) Multiply the image by 2 and then subtract 10 from the result.
(b) Divide image by 2 and then add 10 to the result
(c) Multiply image by 2 and then add 10 to the result.
(d) Add 2 to image and then divide the resulting number by 10.

Answer : A

Question. Manju and Arif are playing a game in which one of them thinks of a number from the grid shown below and the other has to guess it using some clues that are given. Manju thinks of a number and gives the following clues .It is a multiple of 3. It is even. It is in the third row. What is Manju's number?

(a) 6
(b) 12
(c) 15
(d) 18

Answer : B

Question. Geeta has a box containing red, blue and green bangles. If she takes out bangles from the box with her eyes shut, what is the MINIMUM number she has to take out to MAKE SURE that she has taken out a pair of the same colour?
(a) 3
(b) 4
(c) 6
(d) Depends on the number of bangles of each colour in the box.

Answer : B

Question. Look carefully at this number pattern 2, 8, 26, 80, ...... Which of the following is the correct way of getting the FIFTEENTH number in this series?
(a) Multiply the fourteenth number by 4.
(b) Multiply the fourteenth number by 3 and add 2 to the result.
(c) Multiply the fourteenth number by 5 and subtract 2 from the result.
(d) Subtract 54 from the sixteenth number.

Answer : B

Question. Shown below is the picture of a digital clock or how many MINUTES each day (24 hours) does the clock display the digit '5' in the place shown by the arrow?

(a) 10
(b) 24
(c) 120
(d) 240

Answer : C

Question. A certain number is a multiple of 4. Which of the following MUST be a factor of this number?
(a) 16
(b) 8
(c) 6
(d) 2

Answer : D

Question. A prime number is a number, which is not completely divisible by any number except 1 and itself.
Using only the information in the table given here, which of the given numbers can we say with CERTAINTY, IS NOT a prime?

(a) Only 63
(b) Only 83
(c) Only 91
(d) 63 and  91

Answer : D

Question. Between 1 and 50 (excluding both these) how many numbers are there which will leave a remainder 1 when divided by 4?
(a) 10
(b) 12
(c) 13
(d) 15

Answer : B

Question. 83 is a prime number because it has exactly two factors 1 and itself.
Of the following, which number could be a prime?
(a) 83 + 83
(b) 83 x 13
(c) 83 + 13
(d) 83 - 10

Answer : D

Question. Some water got spilled on Asma's Maths book erasing most of the digits of a division problem that she had done.
Using the digits that remained, Asma managed to figure out all the missing digits quickly and rewrote them. What was the quotient that she got?

(a) 35
(b) 99
(c) 92
(d) 93

Answer : C

Question. Shalu wants to colour all the faces of this cuboidal solid. She decides that no two faces which have a common edge should have the same colour. What is the MINIMUM number of colours that will be needed to colour the solid the way she wants?

(a) 2
(b) 3
(c) 4
(d) 5

Answer : B