Numbers Questions

The  sum  of  three  prime  numbers  is  100.  If  one  of  them  exceeds  another  by  36,  then  one  of  the numbers is

A number is greater than 58 times its reciprocal by 3/4. What is the number?

The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term

If 49 is subtracted from the square of a number, then the result obtained is 576. What is the number?

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

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

Which of the numbers given below is NOT rational?

What least number must be added to 4131, so that the sum is completely divisible by 19?