Aptitude Odd Man Out and Series Test Paper 3

Answer: A

Explanation:

The series is * 1; * 1.5; * 2 and so on, therefore:

(a) = 36 X 1 36
(b) = 36 x 1.5 = 54
(c) = 54 X 2 = 108
(d) = 108 X 2.5 = 270
(e) = 270 X 3 = 810

Answer: C

Explanation:

The series is X * 1 + 2,
X * 1 + 2 i.e., 3 * 1 + 2 = 5,
X * 2 + 2 i.e., 5 * 2 + 2 = 12,
X * 3 + 2 i.e., 12 * 3 + 2 = 38
X * 4 + 2 i.e., 38 * 4 + 2 = 154
X * 5 + 2 i.e., 154 * 5 + 2 = 772

So, 914 is the wrong number.

Now, starting from 914

Second number = 914 X 1 + 2 = 916

Third number = 916 X 2 + 2 = 1834

Therefore the third number in the new series is 1834.

Answer: D

Explanation:

The series is

180 is incorrect. In the series beginning with 180
Second number = 180 x = 90
Third number = 90 x = 135

Answer: C

Explanation:

The given series is *,*1,*1 ,*2,*2 ,*3,

8*0.5=4

4*1= 4

4*1.5=6

6*2=12

12*2.5= 30

So, 28 is a wrong number. The new series begins with 28.
So, the second number = 28 x = 14

The third number = 14 x 1 = 14
The fourth number = 14 x 1 = 21

Answer: D

Explanation:

The given series is based on the following pattern:

6 * 1 + 1 * 2 = 8

8 * 2 - 2 * 3 = 10

10 * 3 + 3 * 4 = 42

42 * 4 - 4 * 5 = 148

148 * 5 + 5 * 6 = 770

770 * 6 - 6 * 7 = 4578

Starting with the wrong number 146, we get

The second number = 146 * 1 + 1 * 2 = 148

The third number = 148 * 2 - 2 * 3 = 290

The fourth number = 290 * 3 + 3 * 4 = 882.