Rank, score and age are three numbers.

His score can't be 2, 3, 7, only 97.

Because he is a middle school student, his age can't be 2, 3, 7, but only the product of two of three numbers.

It can't be 2×3(6 years old) or 3×7(2 1 year old), only 2× 7 = 14 years old.

Finally ranked 3.

The result is: ranked third, score 97, age 14. The checking calculation is 3× 97× 14 = 4074.