Quantitative Aptitude - Arithmetic Ability Questions

If PQ and PR be the two tangents to a circle with centre O such that ∠QPR = 120° then ∠POQ is

How many balls of radius 2 cm can be made by melting a bigger ball of diameter 16 cm? (Take π = 22/7)

What is the equation of the line whose y­-intercept is ­3/4 and making an angle of 45° with the positive x-­axis?

If x2-3x+1=0, then x+1x is (x≠0)

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

Reflection of the point (4,­6) in the origin is

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

Find the value of '?' in 512 × 125 ÷ 15625 = 3125 × 25?