Quantitative Aptitude - Arithmetic Ability Questions

Puneet purchases 5 dozens of oranges at the rate of Rs 120 per dozen. He sold each one of them at the rate of Rs 11.5. What is the profit (inpercentage) of Puneet?

If 2 pair of trouser is offered free on purchase of 3 pair of trousers priced Rs 900 each what is the effective discount on each pair of trouser?

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

What is the value of (cos 40° – cos 140°)/(sin 80° + sin 20°)?

If P = 7 + 4√3 and PQ = 1, then what is the value of (1/P2) + (1/Q2)?

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