The number 24 has________ factors
2 Factors
4 factors
6 factors
8 factors
Find the sum of first three multiples of 5.
15
20
30
35
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?
2
4
6
8
The sum of the least prime number and the least composite number is:
1
Number of multiples of 9, which is less than 50
5
7
The sum of prime numbers between 20 and 30 is:
50
23
52
51
The smallest even prime number is
The factor of the number shown on the spike abacus is:
9
LCM of 15, 30 is:
450
21 and 31 are _________ numbers.
Prime
Composite
Co- prime
Twinprime
