1. How many prime numbers are there between 2 and 32, and what are they ?
Solⁿ:
There are ?? prime numbers between 2 and 32.......................

......................A prime number is a number that can be divided only by 1 and itself.

Ans: ???????

2.  Which of the following numbers is exactly divisible by both 9 and 11 ?
(a) 277218 (b) 10098 (c) 12345 (d) 181998

More Details : Link 1 / Link 2

Mutipication Tricks : Unit digit, Digital root, Zeros in, Digital root ..........