Quantitative Aptitude - Arithmetic Ability Questions

One pipe can fill an empty cistern in 4 hours while another can drain the cistern when full in 10 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?

∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

A table was sold at a profit of 10%. If its cost price was 5% less and it was sold for Rs. 7 more, the gain would have been 20%. Find the cost price of the table.

What sum will produce the same interest in 9 years at the rate 8% simple interest as Rs. 800 producein 3 years at 9/2% per annum?

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

What is the measure of an exterior angle of a regular polygon of 10 sides?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the