Knowledge: Being a cool student has a meaning of being popular and every kid wants to be friends with. On the other hand, number 7 is represented to bring luck and harmony.

Conversation:
You know what, my favorite number is 7.
Oh, OK, that's the number between 6 and 8.
Really? tell me more.
Early on, Hindus would write 7 like an upside-down J.
Oh, that's cool. Do you know if number 7 has a meaning?

Response: Yeah, number 7 has a meaning of luck and harmony.