LCM of 5 and 7 is:
5
7
12
35
The smallest even prime number is:
2
8
4
None of these
21 and 31 are _________ numbers.
Prime
Composite
Co- prime
Twin prime
Find the odd one.
59
63
72
84
LCM of 15, 30 is:
15
30
450
The factor of the number shown on the spike abacus is:
9
Find the sum of first three multiples of 5.
20
Number of multiples of 9, which is less than 50?
6
The sum of the least prime number and the least composite number is:
1
Find a number which is a multiple of all the numbers from 1 to 10?
5040
1260
720
1440
