The number 2918245 is divisible by which of the following numbers?

How many even three-digit numbers can be formed from the digits 1 , 2 , 5 , 6 and 9 without repeating any of the digits? 

Find the sum of all prime numbers between 10 and 90.

Nathu and Buchku each have certain number of oranges. Nathu says to Buckhu, " If you give me 10 of your oranges, I will have twice the number of oranges left with you “. Buckhu replies, " If you give me 10 of your oranges, I will have the same number of oranges as left with you." What is the number of oranges with Nathu and Buckhu , respectively ?

The number of integers in between 100 and 600, which are divisible by 4 and 6 both, is: 

For what value of m will the system of equations 17x+my+102=0 and 23x+299y+138=0 have infinite number of solutions? 

If a and b are odd numbers, then which of the following is even?

What is the sum of all natural numbers between 100 and 400 which are divisible by 13?