Answer :
Pretty simple, *The probability of it not landing on red is 4/5*
P(A) - probablity of a spinner landing on red
P(A') - probablity of it not landing on red.
From formula:
P(A) + P(A') = 1 Substitute P(A) =1/5 :
1/5 + P(A')=1
P(A')=1-1/5
P(A') = 4/5 =4/5 * 100% = 80%
So this probablity is 4/5 (or 80%, if you want to have it on a percent)
P(A') - probablity of it not landing on red.
From formula:
P(A) + P(A') = 1 Substitute P(A) =1/5 :
1/5 + P(A')=1
P(A')=1-1/5
P(A') = 4/5 =4/5 * 100% = 80%
So this probablity is 4/5 (or 80%, if you want to have it on a percent)
