Question

Two classes are said to be inseparable when?

(a) there may exist straight lines that doesn’t touch each other

(b) there may exist straight lines that can touch each other

(c) there is only one straight line that separates them

(d) all of the mentioned

This question was addressed to me in an international level competition.

My question comes from Pattern Classification topic in division Feedforward Neural Networks of Neural Networks

Answer 1

Correct answer is (c) there is only one straight line that separates them

For explanation I would say: Linearly separable classes, functions can be separated by a line.