Related Questions

There are 5 doors to a lecture room. In how many ways can a student enter the room through a door and leave the room by a different door?
ক 10
খ 20
গ 9
ঘ 325
The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargaon . By what percent is the charge of a room at Westin is greater than that of Sonargaon ?
ক 15%
খ 17%
গ 19%
ঘ 20%
There are 3 doors to a lecture room, In how many ways can a lecturer enter and leave the room?
ক 1
খ 3
গ 6
ঘ 9
I have left the room but he (enter) the room.
ক enters
খ entered
গ has entered
ঘ is entering
There are 3 doors to a lecture room. In how many ways can a lecturer enter the room from one door and leave from another door ? 
ক 1
খ 3
গ 6
ঘ 9
I have left the room but he (enter) the room: 
ক enters
খ entered
গ has entered
ঘ is entering
Ravi's brother is 3 years senior to him. His father was 28 years of age when his sister was born while his mother was 26 years of age when he was born. If his sister was 4 years of age when his brother was born, what were the ages of Ravi's father and mother respectively when his brother was born ?
ক 32 years, 23 years
খ 32 years, 29 years
গ 35 years, 29 years
ঘ 35 years, 33 years
What command is used with file named 'letter' to remove the executable permission from the user and assign read permission to the group and others?
ক chmod go + x, u - x letter
খ chmod g - x, uo + r letter
গ chmod go + r, u + x letter
ঘ chmod u - x, go + r letter
ঙ None of the above
The length of a room is 1.5 times of its breadth. If the area of the room is 216 sq. meter, what is the perimeter of the room?
ক 42
খ 48
গ 54
ঘ 60
In a room, all except 18 of the people are over 50 years of age. 15 of the people in the room are under 50 years of age. If 10% of the people are at the age of 50 years, how many people are in the room>
ক 27
খ 30
গ 33
ঘ 36

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