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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

Find the mean of first 10 prime numbers and first 10 composite numbers - Mathematics

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प्रश्न

Find the mean of first 10 prime numbers and first 10 composite numbers

योग
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उत्तर

First 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Mean = `"Sum of all data"/"Number of data"`

= `(2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29)/10`

= `129/10`

Mean = 12.9

Mean of first 10 prime numbers = 12.9

First 10 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18

Mean = `(4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18)/10`

= `112/10`

= 11.2

Mean of first 10 composite numbers = 11.2

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अध्याय 5: Statistics - Exercise 5.4 [पृष्ठ ११०]

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सामाचीर कलवी Mathematics - Term 3 [English] Class 7 TN Board
अध्याय 5 Statistics
Exercise 5.4 | Q 10 | पृष्ठ ११०
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