Quantitative Aptitude - Arithmetic Ability Questions

From the circumcentre I of the triangle ABC, perpendicular ID is drawn on BC. If ∠BAC = 60°, then the value of ∠BID is

If the ratio of cost price and selling price be 10:11, then the profit percentage is

The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. The correct average of the observations is

The length of diagonal of a square is 9√2 cm. The square is reshaped to form a triangle. What is the area (in sq.cm) of largest in circle that can be formed in that triangle?

The ratio between the area of a square and that of a circle, when the length of a side of the square is equal to that of the diameter of the circle, is (take π=22/7)

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

If in a triangle ABC, Sin A = Cos B then the value of Cos C is

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?