Of 30 applicans for a job, 14 had at least 4 years experience, 18 had degrees, and 3 had less than 4 years' experience and did not have a degree. How many of the applicants had at least 4 years experience and a degree?

What is the difference between the sixth and the fifth terms of the sequence 2,4,7---- whose nth term is n+2n-...

What is the least number by which 2450 must be multiplied in order to get a perfect square?

A piece of work can be done by 70 labors in 30 days. How many labours should work daily to complete the work i...

If x:y = 5:3 then (8x-5y):(8x+5y) = ?

A toy was bought for Tk 75 and sold at a gain of 8%. What was its selling price in Tk ?

If a man's salary is 20% more than that of his son, how many percent is the son's salary if compared to the sa...