Quantitative Aptitude - Arithmetic Ability Questions

The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?

If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?

Δ ABC is right angled at B. If m∠A = 30°, what is the length of AB (in cm), if AC = 10 cm?

A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one, in 24 days working 8 hours a day?

The length and breadth of a rectangle are 15 cm and 8 cm respectively. Find its area (in cm2)

What is the effective discount (in %) on two successive discounts of 20% and 10%?

What is the measure of an interior angle of a regular dodecagon?

Select the odd word/letters/number/number pair from the given alternatives.