Quantitative Aptitude - Arithmetic Ability Questions

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

In the following question, select the odd word pair from the given alternatives.

In an isosceles trapezium _____.

If 5x - 1 < 3x + 2 and 5x + 5 > 6 - 2x; then x can take which of the following values?

How many three digit whole numbers are there between 75 and 405?

In triangle ABC, O is the orthocenter and angle BOC is 120 deg. Calculate angle BAC.

An exterior angle of a triangle is 115 deg and one of the interior opposite angle is 45 deg. Then the other two angles are

P can do a piece of work in 60 days & Q can do the same work in 50 days. Find the ratio of working efficiencies of P to Q.