A worker can do a job in 4 hours and another worker can do it in 2 hours. How many such works can they do together in 4 hours?

If two sides of a triangle are 5 and 6, then the third side can not be

The ratio of the number of boys to that of girls in a class is 5 : 7. When 24 more boys enter, the ratio is re...

The sum of 3 consecutive multiple of 3 is 90. What is the largest of these numbers?

Two-thirds of the members of a committee are women, one-fourth of the male members of the committee are marrie...

A man buys a television set that lists for Tk 36000 at 10% discount. He gets an additional 2% discount for pay...

There are 'e' students in a school studying English and 'a' students studying Arabic. How many students study...