Question

State, if the following pair of a set is equivalent or not:

P = {5, 6, 7, 8} and M = {x : x ∈ W and x < 4}

Answer 1

P = {5,6,7,8}

n (P) = 4

M = {x : x ∈ W and x ≤ 4}

M = {0, 1, 2, 3, 4}

n (M) = 5

Now Cardinal number of set P = 4 and

Cardinal number of set M = 5

These sets are not equivalent.