কোনো পরীক্ষায় ৭০% পরীক্ষার্থী গণিত এবং ৬০% পরীক্ষার্থী বাংলায় পাশ করল। যদি উভয় বিষয়ে ৫০% পরীক্ষার্থী পাশ করে থাকে, তবে শতকরা কতজন উভয় বিষয়ে ফেল করল?

A card is randomly drawn from a deck of 52 cards. What is the probability of getting a king or Queen ?

The diagnal of a rectangular is √41 cm and its area is 24cm2.What is the perimeter of ractangle ?

If x-1/x=√3 than x+1/x=?

The difference between two number is 5 and the difference between their squares 65. What is the larger number?

The length of two sides of right angled triangle 13cm and 5cm respectively. The length of the third side is -

Consider that w+x=-4, x+y=25 and y+w=15. Then the average of w,x,y is -