Question

In the given figure, each small square represents $2^0$.
Which of the following combinations of colours represent $2^3$?

• A. Yellow, blue and red
• B. Yellow, dark green, blue and purple
• C. Blue, purple, red and light green
• D. Purple and light green

Answer 1

Answer: (B), (C)

Blue, purple, red and light green

Yellow, blue and red squares together represent 6, which is not a power of 2.

Yellow, dark green, blue and purple squares together represent 8, which can be written as $2^3.$

Blue, purple, red and light green squares also represent the power $2^3.$

Purple and light green squares represent the power $2^2.$