25x2+16y2=400 উপেবৃত্তের দিকাক্ষের সমীকরণ-
∫ex(sinx+cosx)dx=?
x2+5x-3=0 সমীকরণের মূলদ্বয় a,b হলে 1a 1b মূল বিশিষ্ট সমীকরণটি হবে-
e=1+11!+12!+13!+14!+---- হলে e একটি
Seats for Mathematics, physics and Biology in a school are in the ratio 5: 7: 8. There is a proposal to increases these seats by 40% , 50% and 75% respectively , what will be the ratio of increased seats?
39 persons can repair a road in 12 days , working 5 hours a day. In how many day will 30 persons, working 6 hours a day. complete the work?
If t> 1 and t increases, which of the following decreases?
If Ruby walks to work at a rate of 2 miles per hour, but she walks home by the same route at a rate of 3 miles per hour, what is Ruby;s average walking rate for the round trip
Ten times 40% of a number is equal to 4 less than the product of 6 times the number , what is the number?
Of 30 integers, 12 are in set A , 22 are in set A , 22 are in set B , and 7 are in both set A and B. How many of the integers in NITTHER set A nor set B?
What percentage of number from 1 to 80 have squares that end the digit 9?
At the rate of f feet per s seconds how many feet does a pedestrian travel in m minutes?
The product of three consecutive odd integers is 3. what is the largest of the integers?
Excluding stoppages, the speed of a bus is 54 kmph and including stoppagers. it is 45 kmph. For how many minutes does the bus stop per hour?
Who is third from the top when they are arranged in descending order of height ?
Who among them is the tallest?
who among them is the lightest?
who among them is the shorter than F?
which of the following groups of friends is shorter than A?
যে সামান্তরিকের সন্নিহিত দুটি বাহু যথাক্রমে a=3iˆ+jˆ−2kˆ b→=iˆ−3jˆ+4kˆ তার ক্ষেত্রফল কত?