( 5_1)*3=18

Question

how to come

Answer 1

Murali Krishna this is due to
remember that (5_1)=51
here _ is noting it combine two integers with itself.
then 51*3=153.

other example
(2_3)=23
(2_3)*2=46

Answer 2

https://code.sololearn.com/cWJNoYHzIp5W/?ref=app
Odd, I get 153.

Answer 3

tell answer

Answer 4

Maninder Singh ohh thanks for explaining.
Murali Krishna welp, the answer definitely isn't 18.

Answer 5

guys i'm pretty sure the poster meant the underscore as a blank space to input something on and you're just supposed to put a plus there lol