Find the sum of 30²+31²+32²+________+80²

If 999x + 888y = 1332 and 888 x + 999y = 555.then the value of (x + y) is-

If 40% of a number is equal to 3 / 5th of another number, what will be the ratio of the first number and the second number?

When the integer n is divided by 7, the remainder is 3. What is the remainder if 5n divided by 7?

What is the sum of first 14 natural numbers?

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

If (x¹¹+1) is divided by (x+1), then the remainder is :

The difference between the average of squares of the last four numbers and the product of the first two numbers of 6 consecutive odd numbers is 114. Find the first number.