A jar contains red balls and green balls in the ratio 3:1. If the jar contains only the two types of balls, which of the following cannot be the number of balls in the jar ?

What value of x satisfies to equation x-2=2-x ?

If A : B =3 : 4 and A : C =6 : 5 then C : B = ?

Out of 7,500 applications for a recruitment test, 1,500 failed to appear for the test. What percent of the tot...

In a cricket tournament 30,000 tickets were sold. One-fourth of the tickets were sold at TK. 30 each, 1/3 were...

There are 20 members on a football squad. In electing a captain and a co-captain, how many different outcomes...

X's marks are 70, 90, 65, 85 and 75. What marks he must get on the next test to raise her average to 80 ?