৩০৫৪১
How many times the digit 7 come in writing all the integers between 699 and 800?
উত্তর
120
৩০৫৪২
Anwar has 4 pens and 2 pencils and Anis has 6 pencils. How many pens should Anwar give to Anis so that the ratio of pen to pencil for both of them becomes the same?
উত্তর
2
৩০৫৪৩
A man works twice as fast as any of his helpers. if he does a jobs in 90 hours how many hours are required for 6 helpers to do this jobs.
উত্তর
30
৩০৫৪৪
Think a number and then double the number. Then add 8 and multiply the result by 6. Now divide the result by 12, then subtract the number you first thought out. What u the final result?
উত্তর
14
৩০৫৪৫
When an article is sold for tk. 250, the seller makes 25%. profit, what is the cost of the article?
উত্তর
200
৩০৫৪৬
C is a circle, L is a line, and P is a point on line L if C. L and P are in the same plane and P is inside C. how many points do C and L have in common.
উত্তর
1
৩০৫৪৭
Arif and Bulu can run 600 meters in 20 and 30 second respectively. How far is Bulu from the finishing line when Arif reaches it?
উত্তর
200m
৩০৫৪৮
A person travels I2 km due north, then 15 km due east after that I5km due west and then 18 km due south. How far B she from the starting point?
উত্তর
33km
৩০৫৪৯
In a school, 25% more students were enrolled in January. But in February, 20% of the students left the number of. students remained was 100. What was the original number of students?
উত্তর
100
সমাধান
Let,Original students xJanuary enrolled students =x+ (x*25%)= 125x/100Feb left students, 125x/100*20/100=25x/100ATQ, 125x/100 -25x/100=100X= 100
৩০৫৫০
A cake is divided into I8 pieces. lf Mamun takes of I/3 cake and Kabir takes I/3 of the rest that are left, how many pieces are still left?
উত্তর
8