The average of x, y, z is 6 and x-y = 4, xy = 21, what is the value of z?

What is the 13 term of the following sequence (নিচের অনুক্রমের ১৩তম পদটি কত? )

A student answers 69 questions in an exam. He makes twice as many mistakes as he makes correct answers. How ma...

Find the square root of the number you get by multiplying 2205 by a least positive integer. (সর্বনিম্ন একটি ধন...

In a hostel mess there are food supplies for 40 boys to last 30 days. After 9 days, some boys left the hostel....

You got after you increased the numerator of a fraction by 50% and decreased the denominator by 28%. What was...

A box has 210 coins of Tk. 2 and TK. 1. The ratio of the values of the coins is 12:29. How many Tk. 1 coins we...