Letters and symbols (Alpha-numeric series)

Read the following and choose the correct answer:

"X, Y and Z are three whole numbers less than 31 but greater than 23. X is a prime number. Y is the largest odd number smaller than 35. Z is the smallest even number?

Read the following and choose the correct answer.

X, Y and Z are three whole numbers less than 24 but greater than 11. X is the smallest prime number. Y is the largest number divisible by 3. Z is the smallest number divisible by 11.

Read the following and choose the correct answer : “ P, Q and R are one-digit, non-negative numbers. P is the smallest even number. Q is the largest odd number. R is 5.”