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A box contains 3 blue,2 white and 4 red ...

A box contains 3 blue,2 white and 4 red marbles. IF a marble is drawn at random from the box, what is the probability that it will be red?

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The resistance of a carbon resistor marked with Red, Red, Red `= 22 xx 10^(2) Omega = 2.2 k Omega = 2200 Omega`
[`:'` Sequence number of Red = 2 and multiplication factor `= 10^(2)`]
The tolerance of carbon resistor `= 6 +- 10%`
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