Mathematics for IGCSE & O level - Probability (Section 4 - No. 49)
A spinner has 4 equal sections colored red, blue, green, and yellow. What is the probability that the spinner lands on a color that is not red?
1/4
1/2
3/4
1/8
Giải thích
The probability of landing on red is 1/4. The probability of not landing on red is 1 - 1/4 = 3/4.