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AYAN PAUL
India
(West Bengal)
AYAN PAUL
Time : 00:00:39
Points : 20
Bharti Kumari
India
(Bihar)
Time : 00:00:44
Points : 20
PRABHAT KUMAR
India
(Bihar)
PRABHAT KUMAR
Time : 00:00:53
Points : 20
Devendra Marghade
India
(Maharashtra)
Devendra Marghade
Time : 00:00:54
Points : 20
Dr.Dipin Singh
India
(Gujarat)
Dr.Dipin Singh
Time : 00:03:21
Points : 17

Yesterday Best Solution

Billal Hossain
Billal Hossain
Let, the leak alone empty a full tank in x hours
Together in 1 hour they fill 1/11 - 1/13 = 2/143
so, 1/x =2/143 of the tank
Therefore, x=71.5 hrs
So, My option is (7)
Is this solution helpfull? Yes (1) | No   

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How many vehicle registration plate numbers can be formed with digits 1,2,3,4,5(no digits being repeated)if it is given that registration number can have 1 to 5 digits ?


options:
205 100 325 105

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Challenger of the Day

AYAN PAUL
AYAN PAUL
India
West Bengal
Time: 00:00:39
Points
20

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