The difference between two successive odd numbers is

(a)

1

(b)

2

(c)

3

(d)

0

The only even prime number is

(a)

4

(b)

6

(c)

2

(d)

0

The prime factorisation of 60 is 2 \(\times\) 2 \(\times\) 3 \(\times\) 5. Any other number which has the same prime factorisation as 60 is

(a)

30

(b)

120

(c)

90

(d)

impossible

If the number 6354 * 97 is divisible by 9, then the value * is

(a)

2

(b)

4

(c)

6

(d)

7

The number 87846 is divisible by

(a)

2 only

(b)

3 only

(c)

11 only

(d)

all of these

The number of prime numbers between 11 and 60 is________.

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12

The numbers 29 and________ are twin primes.

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31

3753 is divisible by 9 and hence divisible by _________ .

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3

The number of distinct prime factors of the smallest 4 digit number is ___________

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2

The sum of distinct prime factors of 30 is_______.

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10

The sum of any number of odd numbers is always even

(a) True

(b) False

Every natural number is either prime or composite

(a) True

(b) False

If a number is divisible by 6, then it must be divisible by 3.

(a) True

(b) False

16254 is divisible by each of 2, 3, 6 and 9.

(a) True

(b) False

The number of distinct prime factors of 105 is 3.

(a) True

(b) False