Question

Mr x tells his door number to his fd. The door num is middle of the three digit number. The difference between first and second number is equal to the differences between second and third number. The product of first and third number is 273.The sum of three number is 51.Then what is the door number be

Answer 1

Let the three numbers be a b and c.

Given-> a-b=b-c

a×c=273

a+b+c=51

A/Q-> a-b = b-c

=> 2b = a+c

a+b+c=51

=> a+c=51 - b

=> 2b = 51- b

=> 3b = 51

=> b = 17

As the middle number is b.

so the room number is 17.

hope it helps and please mark my answer as brainliest