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Let A=1,2,3...

Question

Let $A = {1, 2, 3, 4, 5, 6}$ . How many subsets of $A$ can be formed with just two elements, one even and one odd?

A

6

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B

8

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C

9

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D

10

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Solution

The correct option is A $9$
${1, 2}$ , ${1, 4}$ , ${1, 6}$ , ${2, 3}$ , ${2, 5}$ , ${3, 4}$ , ${3, 6}$ , ${4, 5}$ , ${5, 6}$ ,

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