১৪৮২১
কতজন শিশুর মধ্যে কোন ফল না ভেঙে ১১৫ টি কলা ও ১৫০ টি কমলা ভাগ করে দেয়া যায়?
উত্তর
৫ জন
১৪৮২৩
Water flows through a cylindrical pipe of an internal diameter of 7cm at the rate of 5m/s. The time, in minutes, the pipe would take to fill an empty rectangular tank of 4m × 3m × 2.31m is -
উত্তর
24 min
১৪৮২৪
The height of a cylinder is five times the radius of the cylinder. If the volume of the cylinder is 135π cm3 , what is the height of the cylinder?
উত্তর
15 cm
১৪৮২৫
A man invests Tk. 8,100 partly in 14% stock at 294 and partly in 12% stock at 288. If his income from both is the same, find his investment in the 14% stock.
উত্তর
3780 Tk
১৪৮২৭
There are 7 non-collinear points. How many triangles can be drawn by joining these points?
উত্তর
35
১৪৮৩০
P and Q are two alloys of gold and copper prepared by mixing metals in the ratio 7:2 and 7:11 respectively. If equal amounts of both alloys are melted to form a third alloy R, then the ratio of gold and copper in R will be -
উত্তর
7 : 5