Mathematics for IGCSE & O level - Probability (Section 1 - No. 26)
A box contains 3 red, 5 green, and 2 yellow balls. What is the probability of picking a yellow ball?
1/10
1/5
3/10
1/2
Paliwanag
2 yellow balls out of a total of 10 (3+5+2). 2/10=1/5.