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Measure of two quantities along with the precision of respective measuring instrument is:
\( \mathrm{P} \)
\[
\begin{array}{l}
A=2.5 \mathrm{~ms}^{-1} \pm 0.5 \mathrm{~ms}^{-1} \\
B=0.10 \mathrm{~s} \pm 0.01 \mathrm{~s}
\end{array}
\]
W
The value of \( A B \) will be
(1) \( (0.25 \pm 0.08) \mathrm{m} \)
(2) \( (0.25 \pm 0.5) \mathrm{m} \)
(3) \( (0.25 \pm 0.05) \mathrm{m} \)
(4) \( (0.25 \pm 0.135) \mathrm{m} \)
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