Question

15 25 30
12 14 16
6 ? 16

Answer 1

Given:

15 25 30

12 14 16

6 ? 16

To find:

The value in the place of '?'

Solution:

From given, we have the data as follows.

15 25 30

12 14 16

6 ? 16

Consider the first set of numbers.

15 25 30

25 - 15 = 5

30 - 25 = 5

The difference between the numbers of the series is 5.

Consider the second set of numbers.

12 14 16

14 - 12 = 2

16 - 14 = 2

The difference between the numbers of the series is 2.

Consider the third set of numbers.

6 ? 16

Let '?' be 'x'.

x - 6 = __

16 - x = __

x - 6 = 16 - x

2x = 16 + 6

2x = 22

x = 11

6 11 16

11 - 6 = 5

16 - 11 = 5

The difference between the numbers of the series is 5.

Therefore, we have,

15 25 30

12 14 16

6 11 16