Mathematics, 22.10.2019 19:30 puchie1225
Aking wanted to reward his adviser, a wise man of the kingdom. so he asked the wiseman to name his own reward. the wiseman the king but said he would ask only for some gold coins each day for a month. the coins were to be counted out in a pattern of 1 coin for the first day,3 coins for the second day,5 coins for the third day and so on for 30 days. without making calculations, find how many coins will the advisor get in that month? mention the property used to find the answer.
(square an square roots)
Answers: 2
![\frac{n}{2} [2a+(n-1)d]](/tpl/images/0341/0318/ae2be.png)
![\frac{30}{2} [2*1+(30-1)*2]](/tpl/images/0341/0318/ebe34.png)
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Aking wanted to reward his adviser, a wise man of the kingdom. so he asked the wiseman to name his o...
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