a roof is connected with a pole 10m high. a spider jumps 2m then slips 1m. how many jumps spider need to reach the roof

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Chemistry expert

9
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9m
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Brain Trainer

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9 jumps are required. 1 m effective rise in each jump till 8th jump, he will cover 8 m in 8 jumps and in 9th jump which is of 2 m he will reach on top.
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Spider takes 9 jumps to reach the roof.
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Computer teacher

9 jumps to touch the roof
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Life Science Teacher

20 jumps i think
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I believe in concept formation of students

it requires 9 jumps
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Chemistry tution

9
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9.
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