Identify the missing character in the series 1, 4, 9, ?, 25, 36.

A. 16

What character should replace the question mark in the pattern X, Y, Z, ?, B, C?

A. A

In the sequence 2, 4, 8, ?, 32, 64, what is the missing number?

A. 16

In a series of numbers: 2, 4, 8, 16, ?, 64. What is the missing number?

A. 32

In a pattern of shapes: Circle, Triangle, Square, Circle, Triangle, ?, Square. What is the missing shape?

A. CIRCLE