If p = cosec θ – cot θ and q = (cosec θ + cot θ)^-1 then which one of the following is correct?

A cloth merchant on selling 33 metres of cloth obtain a profit equal to the selling price of 11 metre of cloth the profit is

A and B can do a piece of work in 18 days. B and C together can do it in 30 days. If A is twice as good a workman C, find in how many days B alone can do the work?

Shivani purchased five pens for ₹600. She sells these five pens at the rate of ₹50 per pen. What is the approximate lo percentage that Shivani incurred on selling the five pens?

What should come in place of the question mark '?' in the following number series?

6, 8, 11, 16, 23, ?

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

4 × 5² – 3² × 7 + 6²=?+24

A single discount equivalent to two successive discounts of $$ {12{1\over 2}}{\%}$$ and 20% is

If  $${{(17)^3-(7)^3}\over (17^2+7^2+k)}=10 $$ , then what is the value of k?