Numbers Questions

The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?

The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?

Find the missing number?

In ΔABC measure of angle B is 90°. If cosecA = 13/12, and AB = 10cm, then what is the length (in cm) of side AC?

All rational numbers are ____ numbers.

Divide 20 into two parts such that the sum of the square of the parts is 232. What is the value of the two parts?

Find a two digit number which is exactly three times the product of its digits?

What is the sum of the first 13 terms of an arithmetic progression if the 5th term is 1 and the 8th term is -17?