Latest KVPY Aptitude Question SOLUTION: A certain 12-hour digital clock displays the hour and the minute of a day. Due to a defect in the clock whenever the digit 1 is supposed to be displayed it displays 7. What fractio

• Placement Papers
• /
• KVPY

KVPY Question Papers:

(#M40027073) KVPY question Mental Ability Keep an EYE

A certain 12-hour digital clock displays the hour and the minute of a day. Due to a defect in the clock whenever the digit 1 is supposed to be displayed it displays 7. What fraction of the day will the clock show the correct time ?

Asked In KVPY MAN (10 years ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (2)   (0) Submit Your Solution

Read Solution (1) :

Achyuth  (4 years ago)

The clock will show the incorrect time (between 1 – 2, 10 -11, 11-12 , 12 - 1 day and night both) ∴ in correct time 8 × 60 = 480 (each minute it will display 1) Remaining 20 hours it will show the incorrect time 16 × 15 = 240 Total incorrect time = 240 + 480 = 720 correct time = 1 – incorrect time
1- 720/24*60 = 1/2

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.