# ONLINE MCQ-NUMBER SERIES 2

In each series, look for the degree and direction
of change between the numbers. In other words, do the numbers increase
or decrease, and by how much

Look at this series: 21, 9, 21, 11, 21, 13, 21, … What number should come next?

A. 14
B. 15
C. 21
D. 23

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Explanation:

In this alternating repetition series, the random number
21 is interpolated every other number into an otherwise simple addition
series that increases by 2, beginning with the number 9.

Look at this series: 58, 52, 46, 40, 34, … What number should come next?

A. 26
B. 28
C. 30
D. 32

Explanation:

This is a simple subtraction series. Each number is 6 less than the previous number.

Look at this series: 3, 4, 7, 8, 11, 12, … What number should come next?

A. 7
B. 10
C. 14
D. 15

Explanation:

This alternating addition series begins with 3; then 1 is
added to give 4; then 3 is added to give 7; then 1 is added, and so on.

Look at this series: 8, 22, 8, 28, 8, … What number should come next?

A. 9
B. 29
C. 32
D. 34

Explanation:

This is a simple addition series with a random number, 8,
interpolated as every other number. In the series, 6 is added to each
number except 8, to arrive at the next number.

Look at this series: 31, 29, 24, 22, 17, … What number should come next?

A. 15
B. 14
C. 13
D. 12