Quantitative Aptitude - Arithmetic Ability Questions

What should be the missing digit so that the number 275_476 becomes exactly divisible by 11?

What least number must be subtracted from 518, so that the sum is completely divisible by 13?

What is the measure of the smaller of the two angles formed between the hour hand and the minute hand of a clock when it is 5:49 p.m.?

Δ DEF is right angled at E. If m ∠D = 30°. What is the length (in cm) of DE, if EF = 2√3 cm?

The standard deviation of the set {10, 11, 12, 9, 8} is

The value of x for which the expressions 7x + 13 and 13x - 7 become equal is _____

On dividing 8a2b2c2 by 4a2, we get

The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is