Quantitative Aptitude - Arithmetic Ability Questions

If the radius of a circle is increased by 21%, then its area will increase by what percent?

A train starts from a place A at 8:00 a.m. and arrives at another place B at 1:30 p.m. on the same day. If the speed of the train is 30 km/hr, then what will be the distance (in km) covered by the train?

If 10% loss is made on selling price, then the rate of loss on the cost price will be

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?

If x/y = 4/9, then what is the value of (7x2 – 19xy + 11y2)/y2 ?

If x + (1/x) = 2, then what is the value of x21 + (1/x1331)?

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