16 .

At what time the hands of the clock show a mirror image of 4:10 ?

At what time the hands of the clock show a mirror image of 4:10 ?

A.7:10

B. 7:40

C. 7:50

D.8:10

View AnswerAns: 7:50
17 .

A watch gains 6 minutes in one hour and was set right at 8 AM. What time will it show at 6PM on the same day?

A watch gains 6 minutes in one hour and was set right at 8 AM. What time will it show at 6PM on the same day?

A.8pm

B. 7pm

C. 8:30pm

D.7:30pm

View AnswerAns: 7pm
18 .

In how many ways can Alex and his 5 friends be seated around a circular table if clockwise and anticlockwise directions are considered different?

In how many ways can Alex and his 5 friends be seated around a circular table if clockwise and anticlockwise directions are considered different?

A.120

B. 720

C. 60

D.360

View AnswerAns: 120
19 .

There are 5 chairs arranged in a circular manner in a square room. Total 6 people are to meet in a room, but since only 5 chair are available 1 person will have to stand at one of the corners of the room. In how many ways this can be done? Also note that clockwise arrangement and anti-clockwise arrangement are different.

There are 5 chairs arranged in a circular manner in a square room. Total 6 people are to meet in a room, but since only 5 chair are available 1 person will have to stand at one of the corners of the room. In how many ways this can be done? Also note that clockwise arrangement and anti-clockwise arrangement are different.

A.576

B. 577

C. 578

D.579

View AnswerAns: 576
20 .

A, C are running with speeds of 20m/s, 24m/s on a circular track. A is running in the clockwise direction and C is running in the anti-clockwise direction. At how many distinct points they meet on that circular track?

A, C are running with speeds of 20m/s, 24m/s on a circular track. A is running in the clockwise direction and C is running in the anti-clockwise direction. At how many distinct points they meet on that circular track?

A.9

B. 11

C. 13

D.15

View AnswerAns: 11