Mathematics for IGCSE & O level - Probability (Section 5 - No. 10)
A spinner is divided into four equal sections: red, blue, green, and yellow. What is the probability of *not* landing on yellow?
1/4
1/2
3/4
1
คำอธิบาย
There are 3 sections that are not yellow out of 4 total, resulting in a probability of 3/4.