Find the average of the cubes of the first five natural numbers. 

The product of two consecutive even numbers is 168. Find the sum of the numbers?

If a shopkeeper buys 2 oranges for Rs.5 and sells 3 for Rs.7 only, then what percentage of loss and loss did he gain?

Natu and Buchku each have certain number of oranges. Natu says to Buchku, “If you give me 10 of your oranges, I will have twice the number of oranges left with you”. Buchku 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 Natu and Buchku, respectively?

Find the sum of 2x terms of the series ( 1² - 2² + 3² - 4² + ___ ) 

Which of the following numbers is divisible by 25?

The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number-pairs EXCEPT one. Find that odd number-pair.

In a division sum, the divisor is ten times the quotient and five times the remainder. If the remainder is 46, find the dividend.