Whoever wrote this question cannot produce sentences in fluent english.

On top of this, I see what looks like a Harvard logo, but everything else is written by hand, with mixed colors, and a random marker used instead of a pen to write the "Q:".

Moreover, what the hell is the meaning of "each man and each wife have 7 children?"

Even if "each" man and "each" wife had 7 children "each", wouldn't they have had them with their corresponding partner, so it's still 7 children "per couple"?

All of this screams bullshit.