_________ should subtracted from 642 to make it divisible by 8.
0
1
2
642
LCM of 6, 12 and 18 is:
18
36
24
72
The sum of prime numbers between 20 and 30 is:
50
23
52
51
The smallest even prime number is:
8
4
None of these
Find the odd one.
59
63
84
Common factor of 15 and 12 is:
3
Ravi wrote two digits of a 3- digit number on the black board as shown below.
And the missing digit is ______ if the number has 11 and 13 as factors?
6
Find a number which is a multiple of all the numbers from 1 to 10?
5040
1260
720
1440
What is the difference between the least common multiple and highest common factor of the number 8 and 12?
28
20
From the given data the number of prime numbers between 20 and 30 is: