Quantitative Aptitude - Arithmetic Ability Questions

If (tanA ­- tanB)/(1 + tanAtanB) = x, then the value of x is

If [a + (1/a)]2 – 2[a – (1/a)] = 12, then which of the following is a value of 'a'?

If x + y + z = 0, then what is the value of (3y2 + x2 + z2 )/(2y2 – xz)?

The ratio of two positive numbers is 3:4. The sum of their squares is 400. What is the sum of the numbers?

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

Find the odd word/letters/number from the given alternatives.

For triangle PQR, what is the equation of altitude PS if co­ordinates of P, Q and R are (5,1), (0,­4) and (­2,3) respectively?

P, Q and R are partners in a company. In any year P receives 1/9 part of profit, Q receives 1/6 part of profit and R receives Rs 130000. How much amount (in Rs) will P get as profit?