From 6 boys and 4 girls, 5 are to be selected for admission for a particular course. In how many ways can this be done if there must be exactly 2 girls?

The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was...

City B is 8 miles east of City A. City C is 6 miles north of City B. City D is 16 miles east of City C and Cit...

A company increases every year salary of an officer by 20%. His salary in the year 2001 was Tk. 26,640. What w...

If the average of the four numbers M, 2M+3, 3m-5 and 5M+1 is 63 what is the value of the m?

If a 10% deposit that has been paid toward the purchase of a certain product is Tk. 110, how much more remains...

You can rent a bungalow on daily basis at Taka 500 per day or on monthly basis at Taka 10,000 per month. How m...