If 4x² + y² = 25 and x y = 6, then find the value  of

Select the word which does not belong to the same group from the given alternatives.

Find the odd one out of the choices given therein.

Four of the following five are somehow similar and therefore create a group. Which is not related to this group?

U, F, Z, O, S

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

Which of the following is an odd composite number?

Select the odd letters from the given alternatives.

Three of the four words are alike in a certain way and one is different. Pick the odd one out.

Four letter-clusters have been given out of which four are alike in some manner and one is different. Select the one that is different.