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प्रश्न
Find the mean of all factors of 10.
उत्तर
All factors of 10 are 1, 2, 5, 10
The mean of all factors of 10 are
=`( 1 + 2 + 5 + 10 ) / ( 4 ) `
= `( 18 ) / ( 4 )`
= 4.5
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