There are 4 spiders in a box. They have either 8, 9 or 10 legs. Spiders with odd numbers of legs always lie and spider with even number of legs always speak truth. When it was asked to them individually that how many legs they have collectively, they gave following answers.

Spider 1: we have 33 legs collectively

spider 2; we have 34 legs collectively

spider 3: we have 35 legs collectively

spider 4: we have 36 legs collectively

Which of the 4 spiders is truthful.

 

 

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