Subject
Quantitative Aptitude
Topic
Average
The product of three consecutive numbers is five times the sum of the numbers. Find the average of the numbers.
The product of three consecutive numbers is five times the sum of the numbers. Find the average of the numbers.
ক)
6খ)
3গ)
5ঘ)
4Explanation
ধরি, ক্রমিক সংখ্যা তিনটি (x-1), x এবং (x+1) ক্রমিক সংখ্যা তিনটির যোগফল = (x-1)+x+(x+1)= 3x ক্রমিক সংখ্যা তিনটির গড় = 3x/3 = x প্রশ্নমতে, (x-1) . (x) . (x+1) = 5 . 3x বা, x(x 2 -1) = 15x বা, x 2 - 1 = 15 বা, x 2 = 16 বা, x = ± 4Related questions
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