(a)
A spinner is made from a regular octagon. It is labelled with four A's, three
B's and one C as shown below. Each of the sides is equally likely to be
resting on the table when it stops spinning. Calculate:
P(A resting on the table)
(ii) P(B resting on the table)
(iii) P(Cresting on the table)
(iv) P(not Cresting on the table)
Answers
1/2 , 3/8 & 1/8 are the probability of A , B & C resting on table respectively
Step-by-step explanation:
A spinner is made from a regular octagon
Octagon has 8 sides
labelled with
4 A
3 B
1 C
Each of the sides is equally likely to be resting on the table when it stops spinning
probability that A resting on the table = Number of A's/Total Sides
= 4/8
= 1/2
probability that B resting on the table = Number of B's/Total Sides
= 3/8
probability that C resting on the table = Number of C's/Total Sides
= 1/8
(iv) P(not C resting on the table) = 1 - 1/8 = 7/8
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