if four out of five numbers are 17,18,25,30 and the. mean is 22.6 what is the missing number

The missing number is less than or equal to 18 also. The missing number is greater. Than 30
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2 Answers

5 numbers

AVERAEJ=22.6

4 numbers=17, 18, 25, 30

sum=5*22.6=113

17+18+25+30=90

missing number=113-90

=23
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23 is missing no.
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