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Question
Suppose you have a stretching machine which could stretch almost anything. For example, if you put a 5 metre stick into a (× 4) stretching machine (as shown below), you get a 20 metre stick. Now if you put 10 cm carrot into a (× 4) machine, how long will it be when it comes out?
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Solution
According to the question, if we put a 5 m stick into a (× 4) stretching machine, then machine produces 20 m stick.
Similarly, if we put 10 cm carrot into a (× 4) stretching machine, then machine produce 10 × 4 = 40 cm stick.
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| Input Length | Machine | |||
| × 2 | ||||
| 1 | 5 | |||
| 3 | 15 | |||
| 14 | 7 | |||
