If is the A.M. between a and b, then find the value of n.

Find the sum of integers from 1 to 100 that are divisible by 2 or 5.

If the sum of three numbers in A.P., is 24 and their product is 440, find the numbers.

A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?

The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, then find the number of terms.

How many terms of G.P. 3, 3², 3³, … are needed to give the sum 120?

Find the sum of all numbers between 200 and 400 which are divisible by 7.

Insert five numbers between 8 and 26 such that the resulting sequence is an A.P.

Find the sum of all two digit numbers which when divided by 4, yields 1 as remainder.

The sum of some terms of G.P. is 315 whose first term and the common ratio are 5 and 2, respectively. Find the last term and the number of terms.

Find the sum to n terms of the series 3 × 1² + 5 × 2² + 7 × 3² + …

The 4th term of a G.P. is square of its second term, and the first term is –3. Determine its 7th term.

Find the sum to n terms of the series whose nth terms is given by n² + 2n

Find the sum of integers from 1 to 100 that are divisible by 2 or 5.

Find the slope of a line, which passes through the origin, and the mid-point of the line segment joining the points P (0, – 4) and B (8, 0).

Insert five numbers between 8 and 26 such that the resulting sequence is an A.P.

Describe the sample space for the indicated experiment: A die is thrown two times.

Find the sum to n terms of the series whose nth terms is given by (2n – 1)²