In a proportion, the 1^st , 2^nd and 4^th  terms are 51, 68 and 108, respectively. What is the 3^rd term?

If $$cosθ + cos^2θ= 1,$$find the value of $$\sqrt {sin^4θ+cos^2θ} \ $$

Find the ratio between the fourth proportional of 12, 16, 6 and the third proportional of 4, 6.

A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?

At what rate of simple interest will a sum of money double in 8 years?

Length of a rectangle is 53 metre, while its breath is 28 metre. Cost of covering it with grass bed is Rs.27 sq meter. Find total expenditure?

The price that Akbar should marks on a pair of shoes which costs him 1,200 to gain 12% after allowing a discount of 16% (in rupees) is-

In ΔABC, if G is the centroid and AD is a median with length 9 cm, then the length of AG is: