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Sixty-four tuning forks are arranged in ...

Sixty-four tuning forks are arranged in order of increasing frequency and any two successive forks give four beats per second when sounded together. If the last fork gives the occtave of the first, calculate the frequency of the latter
[Hint: When two frequencies are such that one is double the other, the higher one is said to be an actave higher than the first and the lower one is to be an octave lower than the second.]

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The correct Answer is:
`252`
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