If four children say '1' and one says '0', can they all be of different heights?

Yes, it's possible to arrange them like that

No, one must be taller than another

No, because the '0' means tallest

Yes, they can say '1' without being taller

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Q1.

What does the number '1' indicate about a child in line?

Q2.

If a child at the end of a line says '0', what does that mean?

Q3.

Is it possible for all five children to say '0' when arranged?

Q4.

What sequence indicates that the tallest child is in the middle of a line of five?