A group of 91 students decided to form groups of 8 in order to take part in a game.
- How many students were not involved in the game because they could not belong to a group?
- In order for everyone to participate in the game, the 91 students decided to increase the number of groups from the existing group arrangement. What is the minimum number of students in each group such that everyone would belong to a group?
(a)
Number of pupil that formed groups
= 91 ÷ 8
= 11 r 3
Number of students that were not involved in the game
= 3
(b)
Factors of 91 = 1, 7, 13, 91
Minimum number of students in each group such that everyone would belong to a group
= 7
Answer(s): (a) 3; (b) 7