Teacher: If I gave you 2 rabbits, and another 2 rabbits and another 2, how many will you have?

Pappu: Seven Sir.

Teacher: No, listen carefully. If I gave you 2 rabbits, and another 2rabbits and another 2, how many will you have?

Pappu: Seven.

Teacher: Let me put it to you differently. If I gave you 2 apples, and another apples and another 2, how many will you have?

Pappu: Six. Teacher: Good. Now if I gave you 2 rabbits, and another 2 rabbits and another 2, how many will you have?

Pappu: Seven!

Teacher: Where do you get seven from?

Pappu: Because I've already got one at home.