A man crosses a diagonal of square in two minutes at the speed of 6 km./hr. Find the area of the square-

If sinθ – cosθ = 7/13 and 0⁰ < θ < 90⁰ , then the value of sinθ + cosθ is :

How many positive integers less than 1000 are multiples of 11 whose square roots are whole numbers

A, B, C completes 37.5%, 44.44%, 66.66% of a work in 9 days, 8 days, 8 days respectively. Then find how many days they take to complete 65% of work together? 

What value will come in the place of question mark in the following number series?
5 9 36 208 1398 ? 

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. What was her average rate of reading the pages per hour? 

Percentage of decrease in the number of accidents from May to June is:

A 300-meter-long train moving with an average speed of 126 km/hr. crosses a platform in 24 seconds. A man crosses the same the same platforms in 5 minutes. What is the speed of man in meter/second?