George used a diagram to determine 30% of 60 which expression could he have used

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. which simulation could not be used to answer questions about whether a customer would wait?