Navodaya Maths Quiz – 19 Factors and Multiples English Medium Class 6

Find the least number which is exactly divisible by 4, 6 and 8.
(1) 112
(2) 34
(3) 24
(4) 12

Which of the following is incorrect ?
(1) A factor of a number divides the number exactly.
(2) A multiple of a number is a number divisible by the given number.
(3) 1 is a factor of every number.
(4) The minimum number of factors of a number is 3.

A number is divided by 2 leaves no remainder. Identify the number given below.
(1) Odd number
(2) Even number
(3) Prime numbers greater than 3
(4) All of these

The successor of the lowest composite number is ?
(1) 6
(2) 5
(3) 3
(4) 4

Prime factorisation of 37800 is
(1) 2 x 4 x 25 x 27 x 7
(2) 8 x 27 x 25 x 7
(3) 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5×7
(4) 2 x 2 x 3 x 3 x 5 x 5 x 7 x 7

Which one of the following is the correct statement for the numbers 56 and 84 ?
(1) Both the numbers are prime
(2) Both the numbers are co-prime
(3) Both the numbers are multiples of 14
(4) Both the numbers are odd

What will be the prime factors of 32 ?
(1) 2 x 2 x 2 x 2 x 2
(2) 3 x 3 x 2 x 2
(3) 2 x 2 x 8
(4) 2 x 2 x 2 x 4

Multiply the second multiple of 8 by 12, we get _____.
(1) 176
(2) 182
(3) 192
(4) 196

Find the number which when multiplied by 12 gives 36.
(1) 3
(2) 8
(3) 4
(4) 12

The prime factorisation of 640 is
(1) 2 x 2 x 2 x 2 x 2 x 5
(2) 2 x 2 x 2 x 2 x 2 x 2 x 5
(3) 2 x 2 x 2 x 2 x 2 x 5 x 5
(4) 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5