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-1?
What is the least number by which 2450 must be multiplied in order to get a perfect square?
If b = a +c and b = 3 , then ab + bc =?
If w not 0 and w =2x =22 what is the value of w - x in terms of y?
If a square mirror has a 20-inch diagonal, what is the approxirnate perimeter of the mirror, in inhes?
A piece of work can be done by 70 labors in 30 days. How many labours should work daily to complete the work in 12 days?