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সম্পর্কিত প্রশ্ন সমূহ
A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14, and x. He found the mean to be 12. What should be the number in place of x ?
A.
7
B.
17
C.
31
D.
3
Find the smallest number by which 5808 should be multiplied so that the product becomes a perfect square .
A.
3
B.
7
C.
11
D.
2
The interest on a certain deposit at 4.5% p.a. is TK. 202.50 in one year. How much will the additional interest in one year be on the same deposit at 5% p.a. ?
A.
22.5
B.
25
C.
20.25
D.
42.75
If 0.4 of a number is equal to 0.06 of another number, the ratio of the numbers is :
A.
3:4
B.
3:20
C.
20:3
D.
2:3
Peter purchased a machine for TK. 80,000 and spent TK. 5,000 on repair and TK. 1,000 on transport and sold it with 25% profit , At what price did he sell the machine ?
A.
TK.1,06,250
B.
TK.1,07,500
C.
TK.1,17,500
D.
1,05,100
A takes twice as much time as B or thrice as much time as C to finish a piece of work . Working together , they can finish the work in 2 days . B can do the work alone in :
A.
6 days
B.
8 days
C.
12 days
D.
4 days
Which of the following fractions is greater than and less than ?
A.
B.
C.
D.
Rahim ranks seventh from the top and twenty-sixth from the bottom in class . How many students are there in the class ?
A.
32
B.
33
C.
34
D.
31