Numbers Questions

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?

If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?

The largest 5 digit number exactly divisible by 95 is ______.

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between the first and the third number?

Of the 5 numbers whose average is 76, the first is 3/7 times the sum of other 4. The first number is

The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.

The average of 3 consecutive even numbers is A. If next 5 even numbers are added, then what is the average of these 8 numbers?

The average of 8 consecutive integers is 23/2. What is the average of first three integers?