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Answer (Detailed Solution Below)

Option 4 : 48

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Detailed Solution

सही उत्तर 48 है।

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Question:

Find the average of the first 15 multiples of 6. / 6 के प्रथम 15 गुणजों का औसत ज्ञात कीजिए।

1.
45
2.
51
3.
42
4.
48

Correct Answer: 48

Average of first $n$ multiples of $k$ is $k(n+1)/2 = 6 \times 16/2 = 48$. / प्रथम $n$ गुणजों का औसत $k(n+1)/2 = 6 \times 16/2 = 48$।

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