Number of proper subsets of set {1, 2, 3} is

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1.Set Theory

easy

The number of proper subsets of the set $\{1, 2, 3\}$ is

A

$8$

B

$6$

C

$7$

D

$5$

Solution

(c) Number of proper subsets of the set $(1, 2, 3) =$${2^3} – 1 =7$.

Standard 11

Mathematics

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