H.C.F of 90 and 110 is ______ .
45
10
5
2
If ' 1 ' is the only common factor of two numbers then the two numbers are said to be ________ .
Prime numbers
Relatively co - prime numbers
Twin primes
Composite numbers .
7/0 = ____________ .
0
7
1
Not defined
H.C.F of 34 and 78 using the rule of divisibility is
3
4
Pick out the prime number from the following.
27
17
39
49
Which of the following number is divisible by 11
123244
36940
63180
504379
What is the preceding number of 1000 ?
99
9999
999
1001
If the difference between a pair of prime numbers is __________ , they are called twin primes .
The place value of 6 in 2, 36, 425 is
60
600
6000
6400
Find the odd one :
23
22
47
79
