Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?

What is the average of first 30 multiples of 9?

Which of the following is a reductible fraction?

If sinθ+ cosecθ=2, then the value of sin-7∅+cosec7∅ is

The mean of 10 observations is 13. Two more observations are included and the new mean becomes 14. The mean of two new observations is

What is the area (in sq cm) of a circle whose circumference is 22 cm?

Find the odd words/letters/number from the given alternatives.

Sumit and Amit undertook a work for Rs 7200. Sumit alone can do the work in 5 days and Amit alone can do the work in 4 days. If they work together,then what will be the difference (in Rs.) in the amount they receive?