২৬১২৬
If th radius of cylinder is halved and height is doubled, then what will be the curved surface area?
উত্তর
the same
২৬১২৭
The number of parallelograms that can be formed a set of four parallel lines intersecting another set of tree parallel lines is___
উত্তর
18
২৬১২৮
There are 5 red and 3 black balls in a bag. Probability of drawing a black ball is____
উত্তর
3/8