all the students of class are told to sit in circle shape . here the boy at the 7 th position is exactly opposite to 27 th boy . total number of boys in the class ?
"as half the circle shape consist of 27 - 7 = 20 boys , so total number of boys in full circle = 2 * 20 = 40 answer : b"
multiply(subtract(27, 7), const_2)