৫৮১১
A number when divided by 627 leaves a remainder 43. By dividing the same number by 19 , the remainder will be__
উত্তর
5
৫৮১২
A can finish a work in 5 days and B takes 4 days to do the same work. If the work is increased by 8 times, how many days will it take for both of them to finish the work if they work together?
উত্তর
20 days
৫৮১৩
A computer can perform 30 identical tasks in 6 hour. At that rate, what is the minimum number of computers that should be assigned to complete 80 of the tasks within 3 hours?
উত্তর
6
৫৮১৪
A and B together can complete a piece of work in 12 days, B and C can do it in 20 days and C and A can do it in 15 days. A, B and C together can complete it in-
উত্তর
10 days
৫৮১৫
There are 15 boys and 10 girls in a class. If three students are selected at random, what is the probability that 1 girl and 2 boys are selected?
উত্তর
21/46
৫৮১৬
Roni can walk a certain distance in 40 days when he rests 9 hours a day. How long will it take to walk twice the distance, twice as face and rest twice as long each day?
উত্তর
100 days
৫৮১৭
A takes 2 hr more than B to walk D km. If A doubles his speed then he can make it in 1hr less than B. How much time does B require for walking D km ?
উত্তর
4 hours
৫৮১৮
A computer takes 50 nanoseconds to do an addition. How many additions can it do in 1 second?
উত্তর
20 million
৫৮১৯
A library has an average of 510 visitors on Sunday and 240 on other days. What is the average number of visitors per day in the month of June beginning with a Sunday?
উত্তর
285
৫৮২০
A gardener has to plant trees in rows containing equal number of trees. If he plants in rows of 6, 8, 10 or 12 then five trees are left unplanted. But if he plants in rows of 13 trees each, then no tree is left. What is the number of trees that the gardener plants?
উত্তর
845