Quantitative Aptitude - Arithmetic Ability Questions

Select the odd letters from the given alternatives.

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

sin(A+B) -­ sin(A-­B) is equal to

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

What is the value of {[sin (x + y) – 2 sin x + sin (x – y)]/[cos (x – y) + cos (x + y) – 2 cos x]} × [(sin 10x – sin 8x)/(cos 10x + cos 8x)]?

If 3x2 - ax + 6 = ax2 + 2x + 2 has only one (repeated) solution, then the positive integral solution of a is

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

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.