১৩৫৮১
A student walks from his house at a speed of (5/2) km per hour and reaches his school 6 minutes late. The next day he increases his speed by 1 km per hour and reaches 6 minutes before school time. How far is the school from his house?
উত্তর
7/4 km
১৩৫৮২
A man buys an article for 10% less than its value and sells it for 10% more than its value. His gain or loss percentage is-
উত্তর
More than 20% profit
১৩৫৮৩
A reservoir has two pipes, A and B. A can fill the reservoir 5 hours faster than B. If both together fill the reservoir in 6 hours, the reservoir will be filled by A alone in-
উত্তর
10 hours
১৩৫৮৫
How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?
উত্তর
30
১৩৫৮৬
If the area of a triangle with base x is equal to the area of a square with side x, then the altitude of the triangle is -
উত্তর
2x
১৩৫৮৭
If the radius of a circle is reduced by 40%, its circumference is reduced by-
উত্তর
40%
১৩৫৮৮
The complement of an angle exceeds the angle by 60°. Then the angle is equal to -
উত্তর
15°
১৩৫৮৯
If in ΔABC, AB = 6cm, BC = 12cm and CA = 6√3cm, then the measure of ∠A is-
উত্তর
90°