Numbers Questions

Which smallest number must be subtracted from 400, so that the resulting number is completely divisible by 7?

Which value among 53, 64,126,27612 is the largest?

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?

A number is greater than twice its reciprocal by 31/4. Find the number.

The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?

The sum of three consecutive even integers is 84. Which is the least integer among them?

What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)