Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given options.

Reflection of the point (-3,6) in the x-axis is

If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to

A merchant marked cloth at Rs. 50/metre . He offers 2 successive discounts of 15% and 20%. The net price/metre is

If a+1b = 1 and b+1c = 1 then c+1a = ?

If √[(1 + cosA)/2] = x, then find the value of x.