2 years ago

What is the expression?

Mathematics

1 answer:

nordsb [41]2 years ago

4 0

Answer:

12(2r + 3) is the completed form.

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Answer:

153 coins will be there.

Step-by-step explanation:

The number of coin in the bottom row / or last row = 17

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So the total number of coins = (Number of coin in the first row) + (Number of coins in the second row) + (Number of coins in the third row) + ....... + (Number of coins in the last row / seventeenth row)

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(NOTE: Sum of first n natural number = $\frac{\boldmath n\times(n+1)}{2}$ )

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2 years ago