HCF of 120, 144 and 216 is:
38
24
120
144
Choose the Co-prime numbers from the following.
7 and 63
36 and 25
25 and 21
63 and 81
The least number which when decreased by 7 is exactly divisible by 12, 16, 18, 21 and 28 is:
1,012
1,008
1,015
1,022
The two numbers which have only 1 as their common are called:
Co-primes
Twin prime
Composite
None of these
In 7 * 5 = 35, 7 and 5 are called
products
factors
multiple
none of these
The smallest number of 4-digits exactly divisible by 12, 15, 20 and 35 is:
1,000
1,160
1,260
What are the factors of 20?
1 ,3 , 4 , 5
2, 6, 5
2, 4, 5, 12, 20
1, 2, 4, 5, 10, 20
H.C.F of two Co-prime numbers is:
1
0
2
The factors of 21 are
1,3,7,21
1,3,6,21
2,3,7,21
1,7,21
Number of prime numbers from 1 to 50 are:
18
12
15
20
