Quantitative Aptitude - Arithmetic Ability Questions

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

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

If 5x + 5 > 2 + 2x and 5x + 3 ≤ 4x + 5; then x can take which of the following values?

If Cot θ = 24/7, then Sin θ = ?

If a4 + 1 = [a2 /b2 ] (4b2 – b4 – 1), then what is the value of a4 + b4?

What is the value of a-b when a2+b2-6a-6b+18 = 0 ?

A sum of Rs 6000 becomes Rs 7200 in 2 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 3 years?

If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?