The average of 11 numbers is 7. If each number is doubled, what will be the new average of the numbers?

When a number is divided by 192 the remainder is 54. What will be the remainder when the same number is divided by 16?

For which value of x the seven-digit number 8439x53 is divisible by 99?

Sujata marks the marked price of an article at 36% above the cost price and allows 40% discount on the marked price then what is the loss percentage?

A pipe of diameter ‘d’ can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter ‘2d’ for doing the same job in: 

In an examination, a student was asked to find 3/11 of a certain number, by mistake, he found 3/4 of it. His answer was 315 more than the correct answer. The given number is –

The ratio of the cost of table and chair is 9 : 4. The cost of the table is Rs 1250 more than the cost of the chair. What is the cost of the chair?

If the height of the cylinder is 4 times its circumference, what is the volume of the cylinder with respect to its circumference c?