Quantitative Aptitude - Arithmetic Ability Questions

The smallest number that must be subtracted from 2800 so that the obtained number is a perfect square is

If R019 is divisible by 11, find the value of the smallest natural number R?

Six year ago Parvez’s age was same as the present age of Manish. If the present age of Parvez is one-fourth more than that of Manish's present age, then in how many years will Parvez’s age become double of Manish’s present age?

If a + b = 17 and a - b = 9 then the value of (4a2 + 4b2) is,

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was thesum lent (in Rs)?

A, B and C can finish a job working alone in 72, 24 and 36 days respectively. In how many days they can finish the job if they worked together?

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

If 3 dozen guavas cost Rs. 90, how many guavas can be bought for Rs. 240?