Question 6
When the digits 0, 1, 2, 5, 6, 8 and 9 are rotated $ 180^{\circ} $, they become 0, 1, 2, 5, 9, 8 and 6 respectively. What does 9105 become when the four-digit number is rotated $ 180^{\circ} $?
IMAS · IMAS 2013 — Middle Primary Grades 3–4 — Round 2