Which of the following is an even number?
21
23
28
31
Which of the following is an odd number?
612
713
214
522
Which of the following is a composite number?
11
19
13
14
Which is the smallest prime number?
1
2
3
4
Which of the following is divisible by 6?
125
328
633
372
The sum of all digits of a number is 45. Which of the following will definitely divide the number?
9
7
6
A number is divisible by 5. Which can be the digit at the ones place of the number?
5
Which of the following are twin primes?
2 and 3
3 and 5
5 and 11
2 and 19
Which of the following are co-prime numbers?
2 and 4
3 and 6
3 and 4
2 and 6
Type all the prime factors of 324.
Type the H.C.F. of 12 and 18.
Type the L.C.M. of 11 and 16.
Is 436 a prime or composite number?
Is 496 a perfect number?
Are 16 and 21 co-prime numbers?
The L.C.M. of 12 and 18 is 36. Type the H.C.F. of 12 and 18.
The L.C.M. of two numbers is 1,344 and their H.C.F. is 4. If one of the numbers is 84, type the other number.
