The largest number of five digits, which is a perfect square is 

Direction : What value should come in place question mark(?) in the following questions?

$$2\over7$$ of $$ 5\over6$$ of ?=200

If x+ y=90°, then what is  the value of $$ {\sqrt{cosx.cosecy-cosx.siny}}$$?

If A : B: C= 2 : 3 : 4, then $$ {A\over B}:{B\over C}:{C\over A}$$ is equal to 

What is the compound interest on Rs. 48,000 for 2 years at 20% p.a., if interest is compounded annually?

A sum of money doubles itself in 4 years compound interest. It will amount to 8 times itself at the same rate of interest is -

In the following frequency table, the value of H will be

What is compound interest on a sum of Rs. 37,500 for $$ {1{1\over 3}}$$ years at a rate of 12 % per year. If the interest is compounded 8 monthly?