If (x2-4)(4/x-5)=0, then x=?

What is the absolute value of twice the difference of the roots of the equation 5y2-20y+15=0?

Rina and shila entered into a partnersship with their capitals in the ratio 5 : 6. At the end of 8 months, Rin...

Three coins are tossed. Find the probability of at least one head and one tail.

Three time the present age of a father is equal to eight times the present age of his son. Eight years hence t...

If x>y>0 and p>q>0, then which one of the following expressions must be greater than 1?

The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the followin...