Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 3 and a2+b2=25, then the value of ab is

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?

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

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Weight of A and B are in the ratio 11 : 8. A’s weight increases by 40% and the total weight of A and B increases by 30%. What is the percentage increase in the B’s weight?

What number should be added to each of 4, 16, 18 and 58 so that the resulting numbers will be in proportion in the given order?

Triangle DEF is right angled at E. If cot D = 5/12, then what is the value of sin F?

30% of a number exceeds 25% of the same number by 27. What is the value of the number?