1+3+7+15+...

find the number which will replace the '? in the given sequence: 1 , 2, 3, 7, 15, 24,51, 67 ?

(2x)/3 + 1 = (7x)/15 + 3

What is the average of the set {-1, 3, 7, 11, 15, 19, 23,27} ?

Solve the following equations and check your result : We have : 2x/3 + 1 = 7x/15 + 3

If S_1 = 3, 7, 11 15, … upto 125 terms and S_2 = 4, 7, 10, 13, 16, … upto 125 terms the how many terms are there in S_1 that are there in S_2 ?

The sum to n terms of the series 1/2 + 3/4 + 7/8 + 15/16 + ....... is

x/3 + 1 = 7/15

Solve the equation . x/3 + 1 = 7/15

Simpilfy: 3 + 1 (1)/(5)+(2)/(3)-(7)/(15)