Jia makes pattern shown in figure.27 using a Deck of cards the first step 7 card ,the second step has 12 and the third steps 17 cards.Express number of card in the n th step
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10
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the no. of cards in the nth step would be n×5 cards as the no. of cards in each step in increased by 5
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2
Answer:
- the answer is 7+5(n subtract 1
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