In the series X, Y, Z, ?, B, C, what letter should replace the question mark?

A. A

Find the missing number in the series: 5, 10, 20, ?, 80

B. 40

Dog is to Bark as Cat is to ?

A. MEOW
Posted in:  Double Analogy -  Analogy -  Verbal Reasoning

In the sequence 3, 6, 9, ?, 15, 18, what number should replace the question mark?

A. 12

A, B, C, D, and E are seated in a row. A is to the left of B but not next to C. D is sitting next to E. Who is sitting at the extreme right?

D. E