Quantitative Aptitude - Arithmetic Ability Questions

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

If secθ = cosecq with 0° < θ , q < 90°, then the value of sin (θ + q) is

If a - b = 2 and ab = 8, then what is the value of a3 - b3?

The ratio of present ages of Rambha and Sarvesh is 8:5. After 7 years the ratio of their ages will be 5:4. What is Rambha's present age?

P and Q are at a distance of 240 km from each other at 9:00 a.m. After 1 hour, P starts moving towards Q at a speed of 25 km/hr. At 11 a.m. Q startsmoving towards P at the speed of 18 km/hr. At what time (in p.m.) will they meet?

If ab+ba = -1, then the value of a2b-b2a is

If x2 – 16x – 59 = 0, then what is the value of (x – 6)2 + [1/(x – 6)2]?

If cot(A/2) = x, then the value of x is