The smallest set A such that A 1, 2 = 1, 2, 3, 5, 9 is - Vidyadip

MCQ

The smallest set $A$ such that $A \cup \{1, 2\} = \{1, 2, 3, 5, 9\}$ is

A
$\{2, 3, 5\}$
✓
$\{3, 5, 9\}$
C
$\{1, 2, 5, 9\}$
D
None of these

✓

Answer

Correct option: B.

$\{3, 5, 9\}$

b
(b) Given $A \cup \,\{ 1,\,2\} = \{ 1,\,2,\,3,\,5,\,9\} $. Hence, $A = \{ 3,\,5,9\} $.

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