একটি বৃত্তের ব্যাসার্ধ যদি ২০% কমে, তবে উক্ত বৃত্তের ক্ষেত্রফল-

If a and b are integers greater than 100 such that a+b =300, which of the following could be the exact of a to...

The three sides of a triangle are x+1, 2x-1 and 3x+1 respectively and the perimeter is 25 cm. The length of th...

If the length of a rectangle is increased by 20% and width is decreased by 20% what is the change in area of t...

In how many ways a team of 11 members can be formed from a group of 15 students if a students who is the owner...

At the beginning of a class period, half of the students in a class go to the library. Later in the period, ha...

The dimensions of a box are 2, 3 and 4 meters. The cost of painting the outer sides of the box at the rate of...