What are the common factors of 12 and 18?
1,2,3,4
1,3,4,5
1,2,3,6
1,2,4,6
_________ should subtracted from 642 to make it divisible by 8.
0
1
2
642
Number of multiples of 9, which is less than 50?
4
5
6
7
The smallest even prime number is
8
None of these
________ should be added to 695 to make it divisible by 10.
Find the odd one:
31
43
73
93
LCM of 15, 30 is:
15
30
450
Common factor of 15 and 12 is
3
What is the difference between the least common multiple and highest common factor of the number 8 and 12?
28
20
Find the sum of first three multiples of 5.
35
