A lottery game requires the entrant to select any 7-digit number. The

Dear AbdurRakib,
I'm happy to help. I believe this question is poorly written.

First of all, the amounts.
7 correct digits = 100% = $2200
We know that
50% = $1100
10% = $220
5% = $110
Thus, 5-6 correct digits = 55% = $1100 + $110 = $1210
3-4 correct digits = 35% = 30% + 5% = 3*($220) + $100 = $770
1-2 correct digits = 15% = 10% + 5% = $220 + $110 = $330

Statement #1: Anna won $770
We know that Anna is in the 3-4 digit category, but she might have had 3 digits correct or four digits correct.

Statement #2: If the contestant had picked one more correct number, she would have increased her winnings by $440.
The contestant could move from $330 to $770 or from $770 to $1210. She could have 2 or 4 correct.

Combined: she must have 4 correct. Both statements are sufficient. OA = (C)

What I find deeply problematic about this question is the wording "the contestant." Since we are talking about a specific contestant, presumably we are talking about Anna, the only specific contestant named. This poor wording introduces unnecessary ambiguity into the problem.

Here's a high quality question:
Square and Triangle, Same Area

Does all this make sense?
Mike