Find the mean of first 20 multiples of 5
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Step-by-step explanation:
5 + 10 + 15 +...............+ 100
S(20) = n/2 { a + An }
= 20/2 { 5 + 100 }
= 10 × 105
= 1050
mean of first 20 multiple of 5
= 1050/20 = 105/2 = 52.5
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Answer:
Step-by-step explanation:
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