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how i can solve it by using geometric sequence

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8y ago
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14y ago

Start: 81 cm

After 1 bounce: 81*2/3 = 54 cm

After 2 bounces: 81*(2/3)2 = 36 cm

After 3 bounces: 81*(2/3)3 = 24 cm

After 4 bounces: 81*(2/3)4 = 16 cm

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Q: A ping-pong ball is dropped vertically on a table from a height of 81Cm above the table. It always bounces back two-third of the distance of the previous fall. How high does it bounce back after 4 Tim?
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