Q: 28 (CAPF/2016)

A circular coin of radius 1 cm is allowed to roll freely on the periphery over a circular disc of radius 10 cm. If the disc has no movement and the coin completes one revolution rolling on the periphery over the disc and without slipping , then what is the number of times the coin rotated about its centre?
question_subject: 
Maths
question_year: 
2016
question_exam: 
CAPF
stats: 
0,24,200,112,72,24,16