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
LCM of 15, 30 is:
15
30
5
450
The smallest even prime number is
LCM of 6, 12 and 18 is:
18
36
24
72
Find the sum of first three multiples of 5.
20
35
LCM of 5 and 7 is:
7
12
What is the difference between the least common multiple and highest common factor of the number 8 and 12?
28
The sum of prime numbers between 20 and 30 is:
50
23
52
51
21 and 31 are _________ numbers.
Prime
Composite
Co- prime
Twinprime
The sum of the least prime number and the least composite number is:
1
