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Q1) How many times min hand of clock will be opposite to hour hand  from 4 pm on monday to 10 am on subsequent wednesday?

1)46

2)40

3)44

4) 38

Q2) On particular day if it is found that clock is 8 min fast at 6 am and 4 min slow at 12 noon on same day,then at what time clock show correct timing?

1) 8 am

2) 9 am

3) 10 am

4) 11 am

Q3) if second covers 900 degree how many degree hour hand cover in same time?

1)1 1/4   2)1 1/2 3) 2 1/2 4) 2 3/4

1)  as we know , in period of 12 hours , angle of 180 , (oppostie min hand and hour hand ) happens exactly 11 times ...

so here we have to calculate from 4pm on monday to subsequence wednesday  10am .

now from 4pm monday to 4 pm tuesday it will be 24 hr so angle of 180 will make 22 times .now from 4pm tuesday to 10 am wednesday 12 hr +6 hr = 11+5times = 16 times

so total 22+16= 38...

2) at 6am  fast 8min and 12 at noon 4 min late

relatively 12 mins difference  in 6 hr so in 1 min difference  1/2 hr , so clock will cover  8mins in  8*1/2= 4hr .. so correct time will be show at 10 am ..

3) in 1 min second hand cover 360 degree . so 900 degree will 90/36 min  ,

as we know hour hand in 1 min cover half degree , so in 90/36 min = 1.25 degree ...
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