Question

Can anyone guide me through this one please?

Answer 1

The set

B = {{1, {2, 3}}, 4, {5, 6, 7}, 8}

consists of 4 elements:

• {1, {2, 3}}

• 4

• {5, 6, 7}

• 8

so the correct choices are 4, 8, and {1, {2, 3}}.