Jane Street Interview Question
What is the angle between both hands on the clock at 9:40?
Interview Answer
Anonymous
Oct 5, 2020
Angle between two adjacent numbers is 360°/12 = 30°. Thus in our case it is more than 30° and less than 60°. How much exacly? Well, the hour hand in 40 min has travelled for 2/3 of 30°. Hence 30° + 2/3*30° = 50°