LOGICAL

 

Directions to Solve

Look carefully for the pattern, and then choose which pair of numbers comes next.

1. 28 25 5 21 18 5 14

A. 11 5

B. 10 7

C. 11 8

D. 5 10

E. 10 5

2.  8 11 21 15 18 21 22

A. 25 18

B. 25 21

C. 25 29

D. 24 21

E. 22 26

3.  9 16 23 30 37 44 51

A. 59 66

B. 56 62

C. 58 66

D. 58 65

E. 54 61

4.  2 8 14 20 26 32 38

A. 2 46

B. 44 50

C. 42 48

D. 40 42

E. 32 26

5. 9 11 33 13 15 33 17

A. 19 33

B. 33 35

C. 33 19

D. 15 33

E. 19 21

ANSWERS:

1. Answer: Option A

Explanation: This is an alternating subtraction series with the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.

2. Answer: Option B

Explanation: his is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.

3. Answer: Option D

Explanation: Here is a simple addition series, which begins with 9 and adds 7.

4. Answer: Option B

Explanation: This is a simple addition series, which begins with 2 and adds 6.

5. Answer: Option A

Explanation: In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.