LOGICAL AND CRITICAL REASONING PROBLEMS:Number Series

Part 2
6. Look at this series: 8, 22, 8, 28, 8, . . . What
number should come next?
a. 9
b. 29
c. 32
d. 34
7. Look at this series: 80, 10, 70, 15, 60, . . . What
number should come next?
a. 20
b. 25
c. 30
d. 50
8. Look at this series: 36, 34, 30, 28, 24, . . . What
number should come next?
a. 20
b. 22
c. 23
d. 26
9. Look at this series: 22, 21, 23, 22, 24, 23, . . .
What number should come next?
a. 22
b. 24
c. 25
d. 26
10. Look at this series: 3, 4, 7, 8, 11, 12, . . . What
number should come next?
a. 7
b. 10
c. 14
d. 15
Answers:


6. d. 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.
7. a. This is an alternating addition and subtraction
series. In the first pattern, 10 is subtracted
from each number to arrive at the
next. In the second, 5 is added to each number
to arrive at the next.
8. b. This is an alternating number subtraction
series. First, 2 is subtracted, then 4, then 2,
and so on.
9. c. In this simple alternating subtraction and
addition series; 1 is subtracted, then 2 is
added, and so on.
10. d. 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.
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