WBCS.LIVE practice question

At what time between 4 PM to 5 PM minute hand and hour will be at right angle to each other?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

$4 : 7 \frac{5}{11}$
$4 : 4 \frac{5}{11}$
$4 : 9 \frac{5}{11}$
None of these

Correct answer and explanation

Correct answer: None of these