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प्रश्न
Find the mean of first five multiples of 3.
उत्तर
First five multiple of 3: 3, 6, 9,12,15
∴ Mean = `"Sum of Numbers "/"Total Numbers"`
= `(3 + 6 + 9 +12 +15) / 5`
= ` 45 / 5 = 9`
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