Quantitative Aptitude - Arithmetic Ability Questions

The value of cos220° + cos270°is

Two circles touch externally. The sum of their areas is 130π sq.cm and the distance between their centers is 14 cm. The radius of the bigger circle is

A sum of money invested for 2 yrs and 9 months at the rate of 8% simple interest per annum became Rs.732 at the end of the period. What was the sum that was initially invested?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

If ax + by = 1 and bx + ay = 2aba2+b2 then x2+y2a2+b2 is equal to

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

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