Quantitative Aptitude - Arithmetic Ability Questions

The LCM of 72 and 84 is:

The value of cos (1110°) is

If (x ­- 2) (x -­ p) = x2 - ax + 6, then the value of (a -­ p) is

A can do 1/3rd of a work in 5 days and B can do 2/5th of this work in 10 days. Both A and B, together can do the work in

PQRS is a square whose side is 16 cm. What is the value of the side (in cm) of the largest regular octagon that can be cut from the given square?

If tanθ + cotθ = 5, then the value of tan2θ + cot2θ is

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

If x3 + y3 + z3 = 3(1 + xyz), P = y + z – x, Q = z + x – y and R = x + y – z, then what is the value of P3 + Q3 + R3 – 3PQR?