Ione suspects a trap, and tries to rapidly work it out in her head.  For the '2', it's 2 + 6 + 10 + 30, divided by 4, which is... damn it, this is harder to do in her head... 12?  And for the '3', it's 3 + 6 + 15 + 30 = 54, divided by 4 is no it doesn't matter it's not all going to add up to 30.  "Wait -" Ione begins.

Ione suspects a trap, and tries to rapidly work it out in her head.  For the '2', it's 2 + 6 + 10 + 30, divided by 4, which is... damn it, this is harder to do in her head... 12?  And for the '3', it's 3 + 6 + 15 + 30 = 54, divided by 4 is no it doesn't matter it's not all going to add up to 30.  "Wait, I see my mistake -" Ione begins.