Pick out the prime number from the following.
17
27
39
49
A given number is divisible by 6 , if it is divisible by __________.
2
3
Both 2 and 3
None of these
The number which is neither prime nor composite is __________.
0
1
The prime factorisation of 24 is
2 × 3 × 4
6 × 4
8 × 3
2 × 2 × 2 × 3
The smallest prime number is
Find the odd one:
31
43
73
93
The LCM of 2 , 3 and 6 is
4
6
12
Which of the following statement is false?
Every number is both a factor and a multiple of itself
56 is a multiple of each one of 4 , 7 and 8
1 is called a unique number because it has only one factor
30615 is divisible by 9
The HCF of 16 and 25 is
77
57
91
