১১৪৩১
In a class, the number of girls is 20% more than that of boys. The strength of the class is 66. If 4 more girls are admitted to the class, the ratio of the number of boys to that of the girls is -
উত্তর
3 : 4
১১৪৩৩
Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. the smaller number is:
উত্তর
33
১১৪৩৪
A monkey climbs a 60 m high pole. In the first minute, he climbs 6m and slips down 3m in the next minute. How much time is required by it to reach the top?
উত্তর
37 minutes
১১৪৩৫
Two trains 105 meters and 90 meters long, run at the speeds of 45 km/h and 72 km/h respectively, in opposite directions on parallel tracks. The time which they take to cross each other is:
উত্তর
6 seconds
১১৪৩৬
The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance traveled downstream in 12 minutes is
উত্তর
3.6 km
১১৪৩৭
A bag contains 2 red, 3 green, and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
উত্তর
10/21
১১৪৩৮
The length of a rectangular plot is 20 meters more than its breadth. If the cost of fencing the plot at Tk. 26.50 per meter is Tk. 5,300. What is the length of the plot in meters?
উত্তর
60
১১৪৩৯
Which one of the following numbers can be removed from the set S = { 0, 2, 4, 5, 9) without changing the average of set S?
উত্তর
5
১১৪৪০
Find the least number of five digits which when divided by 40, 60, and 75, leave remainder 31, 51 and 66 respectively.
উত্তর
10191