Answer: 2/4 or 1/2
Step-by-step explanation: Based on the spinner shown, there are 5 equal sections, 1 of which is yellow and 2 of which are blue. If the spinner does not land on yellow, it will land on one of the 4 other sections, 2 of which are blue.
Therefore, the probability of landing on blue given that it does not land on yellow is 2/4 or 1/2.