Question

12+13=7,
14+15=11,
16+17=15,
18+19=?​

Answer 1

Answer:

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Answer 2

Given,

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

Here we have to find the value of last one.

Here one trick is used that is first add the two digits in the number after that add the produced numbers

Suppose,

$12+13=7\\1+2+1+3=7\\3+4=7\\7=7$

From this, we have to find the value of $18+19$

$18+19=1+8+1+9\\=9+10\\=19$

Therefore, the value of $18+19$ is $19$.