১০৯৩৪
If þ is defined for all positive real numbers a and b by aþb = ab/(a+b), then 10þ2 = ?
উত্তর
5/3
১০৯৩৫
If the length of a rectangle is increased by 20% and width is decreased by 20%, what is the change in area of the rectangle?
উত্তর
decreased by 4%
১০৯৩৬
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 tk. 3 per square meter is ___
উত্তর
Tk. 156
১০৯৩৭
In each expression below, N represents a negative integer. Which expression could have a negative value?
উত্তর
6 + N
6 + N
১০৯৩৮
If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?
উত্তর
1/4