FMO 2021 - Grade 4 - National - Paper 09 - Sample Question 14

Question 14

A secret agent seeks a six-digit code. The sum of the digits in even positions equals the sum in odd positions. Each asterisk hides a digit, and different asterisks may hide different digits. Which pattern cannot be the code?

7\*92\*5
275\*\*\*
581\*2\*
9\*85\*2
\*2\*345