Question

12+13=7 14+15=11 16+17=15 18+19=??

Answer 1

Given,

The values,

12+13=7, 14+15=11, 16+17=15

To Find,

The value of 18+19

Solution,

From the given data, that is 12+13=7, it can be deduced as below:

12+13 that is 1+2+1+3 = 7 and  a relation is formed 12+13 = 7.

Similarly, 14+15 ⇒ 1+4+1+5 = 11

16+17 ⇒ 1+6+1+7 = 15

Similarly, for all the given values the above logic stands true.

Thus if we apply the above logic to 18+19, that is 1+8+1+9 = 19

Henceforth, the value of 18+19 = 19