২৬২৯১
The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is __
উত্তর
24
২৬২৯২
A two-digit number becomes five-sixth of itself when its digits are reversed. The two digits differ by one. What is the number?
উত্তর
54
২৬২৯৪
A batsman has a certain average of runs for 12 innings. In the 13th inning, he scores 96 runs thereby increasing his average by 5 runs. what is his average after the 13 innings?
উত্তর
36
২৬২৯৮
A man takes 3 hours 45 minutes to row a boat 22.5 km downstream of a river and 2 hours 30 minutes to cover a distance of 10 km up stream. Find the speed of the river current in km /hr.
উত্তর
1 km/hr
২৬৩০০
A man can row 6 km / hr in still water. If the speed of the current is 2 km / hr. it takes 3 hrs more in upstream than in the downstream for the same distance. The distance is __
উত্তর
24 km