The mystery number is a three-digit number. Its digits are 1, 8, and 4.

• The 4 and the 8 are not next to each other.

• The 1 comes before the 4.

What is the mystery number?

814

Step-by-step explanation:

there has to be a number between 4,8

so either 4 can be at hundred position or 8 can be at hundredth position.

but since 1 comes before 4, then 1 has to be at tens place and 4 has to be at one's place.

so number is 814