Find the sum of first three multiples of 5.
15
20
30
35
LCM of 15, 30 is:
5
450
________ should be added to 695 to make it divisible by 10.
1
2
0
What is the difference between the least common multiple and highest common factor of the number 8 and 12?
28
8
4
The sum of prime numbers between 20 and 30 is:
50
23
52
51
_________ should subtracted from 642 to make it divisible by 8.
642
From the given data the number of prime numbers between 20 and 30 is:
3
21 and 31 are _________ numbers.
Prime
Composite
Co- prime
Twin prime
Common factor of 15 and 12 is:
None of these
The sum of the least prime number and the least composite number is:
6
