১৩৯১১
If the side of a square is increased by 10%, by what percent will the area be increased?
উত্তর
21%
১৩৯১২
If the radius of a right cylinder is tripled and the height is reduced by 40%, then what would the percentage change in volume?
উত্তর
440%
১৩৯১৩
What is the angle between the hour and minute hands of a clock at 14 : 50?
উত্তর
145°
১৩৯১৪
How many terms of the arithmetic progression 2, 7, 12,... should be taken so that their sum equals 354?
উত্তর
12
১৩৯১৬
In a simultaneous throw of a pair of dice, what is the probability of getting a total more than 8?
উত্তর
5/18
১৩৯১৭
The H.C.F. of two number is 11 and their L.C.M. is 693. If one of the numbers is 77, find the other.
উত্তর
99
১৩৯১৮
Silver is 17 times as heavy as water and copper is 7 times as heavy as water. In what ratio should these be mixed to get alloy 13 times as heavy as water?
উত্তর
3 : 2
১৩৯১৯
The average of six numbers is 30. If the average of first four is 25 and that of last three is 35, the fourth number is:
উত্তর
25
১৩৯২০
A sum of TK. 600 amounts to TK. 720 in 4 years at simple interest. What will it amount to if the rate of interest is increased by 2%?
উত্তর
768