Quantitative Aptitude - Arithmetic Ability Questions

The addition of a rational number and its reciprocal is 61/30. Calculate the number.

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 alternatives.

If a + b = 10 and ab = 24, then the value of a3 + b3 is

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1 )] + [1/(2 + x2 )] + [1/(2 + x3 )]?

If 4x + 3y = 11 and 3x + 2y = 8, then (x,y) is

Find the odd word/letters/number pair from the given alternatives

If a + b = 1, then a4 + b4 - a3 - b3 - 2a2b2 + ab is equal to

If a = 3+23-2, b = 3-23+2 then a2+b2-ab ?