Question:
The Mean of First Seven Multiples of 5 is
The Mean of First Seven Multiples of 5 is
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The mean of the first \( n \) multiples of a number \( x \) is given by:
\[
\frac{x(1+2+3+...+n)}{n} = x \cdot \frac{n+1}{2}.
\]
Updated On: Oct 27, 2025
- \( 25 \)
- \( 20 \)
- \( 30 \)
- \( 35 \)
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The Correct Option is B
Solution and Explanation
The first seven multiples of 5 are:
\[ 5, 10, 15, 20, 25, 30, \] The mean is calculated as:
\[ \text{Mean} = \frac{5 + 10 + 15 + 20 + 25 + 30 + 35}{7} = \frac{140}{7} =
\]
\[ 5, 10, 15, 20, 25, 30, \] The mean is calculated as:
\[ \text{Mean} = \frac{5 + 10 + 15 + 20 + 25 + 30 + 35}{7} = \frac{140}{7} =
\]
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