The average of 7 consecutive number is 20. The largest of these numbers is :
Created: 6 years ago |
Updated: 3 years ago
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Hints: The average of seven consecutive number is -
a + a + 1 + a + 2 + a + 3 + a + 4 + a + 5 + a + 6/7 = 20
7a + 21 = 20 × 7
7a = 140 - 21
a = 119/7 = 17
Target = 17 + 6 = 23 (ans)
Md Azizur Rahman
Founder of Satt
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