A = {prime numbers between 10 and 16}

B = {multiples of 3 between 10 and 16}

1) List the member of AUB?

Is the answer 11, 12, 13 and 15?

2) What is AnB?

Is the answer the empty set?

3) Is it true that 11 E B?

It the answer no as it is not a multiple of 3?