Project ForgeEngineering Mathematics
Probability & Statistics
GATE 2017
Easy
A box has 6 red balls and 4 white balls. A ball is picked, replaced, then a second ball is picked. The probability of both balls being red, rounded to 2 decimal places, is
0.36(± 0.01 accepted)
Explanation
P(red)=6/10=0.6 each independent draw. P(both red)=0.6×0.6=0.36.
Source: GATE CH 2017 (2017)
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