Irina asked five of her studentshow many of the five had stu

Irina asked five of her studentshow many of the five had studied the day before. Pol said none, Berta said only one, Ona said exactly tow, eugeni said exactly three, and gerard said exactly four. Irina knew that those studens who had not studied were not telling the truth, but those who had studied were telling the truth. How many of these students had stuided the day before?

a) 0      B) 1   c) 2   d) 3    e) 4

Solution

There are 5 students.

Pol said none,

Berta only one

ONa said two, Eugeni said 3, gerard said 4

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Hence Berta is telling the truth as he studied

All others are lying

Hence answer B.

Only one student did not lie that student was Berta and he only studied.