If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

If sin3A = x, then value of x is

What is the value of cot 5π/3?

What are the 2 natural numbers, sum of whose squares is 52?

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

Coefficient of x2 in (x + 9)(6 -­ 4x) is

What is the value of (4a2 + 8b + 14c + 2)/2 ?

√[(1 ­ sinA)/(1 + sinA)] is equal to?