Question

Let M = {1, 2, a, b, 7, TT, 2 + i), then which of the following is(are) always true ?
A. Number of subset of M is 27
B. Number of subset of M is 26
C. Number of proper subset of M is 127
D. Number of proper subset of M is 63
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Answer 1

Answer:

C is the answer

Step-by-step explanation:

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