$A$ physical quantity $A$ is dependent on four other physical quantities $p, q, r,$ and $s$ as given by the relation $A = \frac{\sqrt{pq}}{r^2s^3}.$ If the percentage errors of measurement in $p, q, r,$ and $s$ are $1\%, 3\%, 0.5\%,$ and $0.33\%$ respectively,then the maximum percentage error in $A$ is .......... $\%$.

  • A
    $2$
  • B
    $0$
  • C
    $4$
  • D
    $3$

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Two clocks are being tested against a standard clock located in a national laboratory. At $12:00:00$ noon by the standard clock,the readings of the two clocks are
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Thursday$12:01:50$$10:15:07$
Friday$11:59:15$$10:14:53$
Saturday$12:01:30$$10:15:24$
Sunday$12:01:19$$10:15:11$

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