Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letter group from the given alternatives.

If 1 saree is offered free on purchase of 3 sarees, what is the effective discount on each saree?

Ramesh sold a phone at a loss of 5%. Had he sold it for Rs. 200 more, he would gave gained 15%. To gain 25%, he should sell it for

If 1p+1q = 1p+q, then the value of p3-q3

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

Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.

The average weight of Shivshankar, Gopesh and Reena is 97 kg. If the average weight of Shivshankar and Gopesh is 93 kg and that of Gopesh and Reena is 82 kg, then the weight of Gopesh is

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?