\textbf{190.} Two ends of a string are fixed at two points and a standing wave is formed on it. The wavelength is $16\,\text{cm}$. Which of the following measurements given in centimeters cannot be the length of this string?
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(1) $24$ \hfill (2) $40$ \hfill (3) $60$ \hfill (4) $120$
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