You are to arrange 36 identical chairs in rows such that there is same number of chairs in each row. Each row must contain at least 4 chairs and there must be at least 3 rows. How many different arrangements are possible?

Mr. Rahman is insured completely for Tk. 50,000 of damages to his machinery. For any damage above Tk. 50,000 t...

The probability that a student will graduate with honors and get a good job is 0.09 whereas the probability th...

A South American visitor was confused to read that the next day's temperature would be 77 degree Fahrenheit. T...

If (x+3y)=15 and x=-1.5y, then x=?

If n is an even integer which of the following must be an odd integer?

How much salt must we add to 10 grams of a 20% salt solution to strengthen it into a 50% solution?