VTMO 2026 - Grade 3 - Semifinal - SET 6 - Self-study Question 4

Question 4

A box contains four balls coloured red, yellow, blue and black. The red ball is heavier than the yellow ball but lighter than the blue ball. The black ball is lighter than the red ball but heavier than the yellow ball. List the balls from heaviest to lightest.

Question illustration

Blue – red – yellow – black
Yellow – black – red – blue
Black – yellow – red – blue
Blue – red – black – yellow
Yellow – red – black – blue