0.25
Probability of pass on second attempt is 40% x 80% = 32%
1% off of 90 = 89.1 = 1% discount applied to 90 = 90 - (1% * 90) = 90 - (0.01 * 90) = 90 - 0.9 = 89.1
0.9 as 90/100 = 0.9
1 percent change out of 100
The probability of someone living for ten years is 90%.
Sounds like a 100% chance of passing school.
0.25
The probability is 0.48
The probability of 33.3 percent is 0.333.
Probability of pass on second attempt is 40% x 80% = 32%
90 minus 30 percent - and therefore 30 percent OFF the number, is equal to 90 x (1 - (30 / 100)) = 90 x (1 - 0.3) = 90 x 0.7 = 63. 30 percent OF 90 is equal to 90 x (30 / 100) = 90 x 0.3 = 27
1% off of 90 = 89.1 = 1% discount applied to 90 = 90 - (1% * 90) = 90 - (0.01 * 90) = 90 - 0.9 = 89.1
0.9 as 90/100 = 0.9
The total probability of something happening plus the probability of that same thing not happening is 1, or 100 % → probability of not happening = 1 - 0.25 = 0.75 or 100 % - 25 % = 75 %
1
probability of 75 percent = 3/4