Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letters from the given alternatives.

If x+1/x = 2, then the value of x7+2/x6 is equal to?

If the simple interest on Rs. 1 for 1 month is 1 paisa, then the rate percent per annum will be

A piece of wire 132 cm long is bent successively in the shape of an equilateral triangle, a square and a circle. Then area will be longest in shape of

In ∆ABCif the median AD=1/2 BC, then ∠BAC is

If (x – y) = 7, then what is the value of (x – 15)3 – (y – 8)3?

In a triangle PQR, S and T are the points on PQ and PR respectively, such that ST II QR and PS/SQ=3/5,PR =6cm, then PT is

A car travels from A to B with 40 Km/h and returns from B to A with 60 Km/h. Its average speed during the whole journey is