Solve this multiple-choice question and choose the correct option.

Curioustab

At what point of time after 3 O' clock, hour hand and minute hand are at right angles for the first time?

Aptitude Calendar

Choose an option

A

9 O' Clock
B

4 H 371/6 min
C

3 H 308/11 min
D

3 H 328/11 min

Answer

Correct Answer: 3 H 328/11 min

Explanation

Clock will make right angle at (5n + 15) x 12/11 min past n. Given that, n = 3 ∴ Clock will make right angle at ( 5 x 3 + 15 ) x 12/11 min past 3 . =30 x 12 / 11 min past 3. = 32⁸/₁₁ min So required time = 3 H 32⁸/₁₁ min

← Previous Next →

Discussion & Comments

No comments yet. Be the first to comment!

More Questions from Calendar

At 6:15, the hour hand and the minute hand of a clock from an angle of?
In a month of 31 days, third Thursday falls on 16th. What will be the last day of the month?
An accurate clock shows the time as 3:00 after hour hand has moved 135°, the time would be?
A clock strikes 12 talking 48 s. In order to strikes 3 at the same rate, the time taken is?
An accurate clock shown 8 O' clock in the morning through how many degrees will the hour hand rotate when the clock s...
If the seventh day of a month is three days earlier than Friday, what day will be on the nineteenth day of the month?
If a month in an year start with Monday, then the date of the fourth day after the second Saturday in that month, wil...
In a clock, the angle between the hour hand and minute hand at 5 h 10 min, is?
The director came to the office to attend a meeting at 15 min past 12 and he came 25 min before his steno who in turn...
When the time in the wall clock in 3:25 pm, the acute angle between the hour hand and minute hand is?

Join Discussion