The average of 5 consecutive numbers is n. If the next two numbers are also included, the average will :
Created: 6 years ago |
Updated: 3 years ago
best des
ধরি, প্রথম সংখ্যাটি a
তাহলে, ( a + a + 1 + a + 2 + a + 3 + a + 4)/5 = x
(5a + 10)/5 = x
a + 2 = x
এখন পরের দুটি যোগ করলে, (7a + 21)/7 = a + 3
= a + 2 + 1
= x + 1
অর্থাৎ 1 increase হয়েছে।
Md Azizur Rahman
Founder of Satt
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