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সম্পর্কিত প্রশ্ন সমূহ
What mathematical operation should come at the place of ‘?’ in the equation : $2 ? 6 – 12 \div 4 + 2 = 11$
A.
+
B.
–
C.
×
D.
÷
The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers ?
A.
2
B.
5
C.
8
D.
None of these
Two numbers are such that the ratio between them is 4:7 . If each is increased by 4, the ratio becomes 3:5 . The larger number is :
A.
36
B.
48
C.
56
D.
64
A person’s present age is two-fifth of the age of his mother. After 8 years , he will be one-half of the age of his mother . How old is the mother at present ?
A.
32 years
B.
36 years
C.
40 years
D.
48 years
If 25% of a number is subtracted from a second number, the second number reduces to its five-sixth .What is the ratio of the first number to the second number ?
A.
Sat Dec 30 1899 01:03:00 GMT+0000 (Coordinated Universal Time)
B.
Sat Dec 30 1899 02:03:00 GMT+0000 (Coordinated Universal Time)
C.
Sat Dec 30 1899 03:02:00 GMT+0000 (Coordinated Universal Time)
D.
None of these
The ages of A and B are in the ratio 3:1 . Fifteen years hence , the ratio will be 2:1 . Their present ages are :
A.
30 years , 10 years
B.
45 years , 15 years
C.
21 years , 7 years
D.
60 years , 20 years
Aunik, Kamal and Jamal invested TK. 8000, TK. 4000 and TK. 8000 respectively in a business . Aunik left after six months. If after eight months, there was a gain of TK. 4005, then what will be the share of Kamal ?
A.
890
B.
1335
C.
1602
D.
1780
15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take , if 3 women do as much work as 2 men ?
A.
18
B.
20
C.
25
D.
30
A is 30% more efficient than B . How much time will they, working together , take to-complete a job which A alone could have done in 23 days ?
A.
11 days
B.
13 days
C.
21 days
D.
None of these