Dhananjay Mishra

If p and q are two distinct prime numbers ,then their HCF is ;

• 2

• 0

• Either 1 or 2

• 1

If the p and q are two distinct prime number then their LCM (p,q) is ;

• 1

• Pq

• p

• q

The smallest number divisible by all natural number between 1 and 10 (both inclusive) is ;

• 2020

• 2520

• 1010

• 5040

The HCF of 95 and 152 is ;

• 57

• 1

• 19

• 38

The exponent of 2 in the prime factorization of 144 is ;

• 4

• 5

• 6

• 3

The LCM of two number is 1200 . which of the following can not be their HCF ?

• 600

• 500

• 400

• 200

The sum of the exponents of the prime factor in the prime factorization of 196 is ;

• 1

• 2

• 4

• 6

The HCF of two number is 18 and their product is 12960 .Their LCM will be ;

• 420

• 600

• 720

• 800

The decimal expansion of (147/120) will terminate after how many places ?

• 1

• 2

• 3

• 4

The HCF and LCM of 12 , 21, 15 respectively are ;

• 3 , 140

• 12 , 420

• 3 , 420

• 420 , 3