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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
One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in :
A.
81 min
B.
108 min
C.
144 min
D.
192 min