Question

If 2018=2 5684=5
4219=7
4135=4
1387=?

Answer 1

Given:

• A number series is given

           2018=2

           5684=5

           4219=7

           4135=4

           1387=?

To Find:

• Find the missing number.

Solution:

• First add the all digits within the number.

• Now, again add all digits of the number that is obtained in first step.
• Result of the second step is the final number..

         ⇒   2018  = 2 + 0 + 1 + 8 = 11  ⇒  1 + 1 = 2

         ⇒    5684 = 5 + 6 + 8 + 4 = 23  ⇒  2 + 3 = 5

         ⇒    4219  = 4 + 2 + 1 + 9 = 16  ⇒  1 + 6 = 7

         ⇒     4135  = 4 + 1 + 3 + 5 = 13  ⇒  1 + 3 = 4

         ⇒   1387  =  1 + 3 + 8 + 7 = 19  ⇒  1 + 9 = 10 or 1 + 0 = 1

Thus, the missing number is either 1 or 10