I'll be sending a photo of my problem

Nachiketkulk asked Apr 13, 2023

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45 votes

Nachiketkulk asked Apr 13, 2023

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14 votes

$\Sigma^6_(j=1)9j\text{ = 9}\cdot1\text{ + 9}\cdot2\text{ +9}\cdot3\text{ +9}\cdot4\text{ + 9}\cdot5\text{ + 9}\cdot6\text{ = 189}$

Another way of solving this is the following:

Ulrich answered Apr 18, 2023

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