Quantitative Aptitude - Arithmetic Ability Questions

The value of 1/64 is equal to square of

In a triangle PQR, ∠PQR = 90 deg, PQ = 10 cm and PR = 26 cm, then what is the value (in cm) of inradius of incircle?

If  C+1C = 3, then what is the value of C3+1C3 = ?

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

Which of the following quadratic equations has real roots?

If cotA/√(1 + cot2A) = x, then the value of x is

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

What is the difference (in Rs) between compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 3000 at the annual rate of 20%?