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Probability to Select at Least 3 Red Balls from 4 Trails Without Replacement
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#probability #CoinsProbability #combinatorics_and_probability #permutationandcombination #permutation_combination #combinatorics #combinations #permutations #AnilKumar #GlobalMathInstitute #mpm4 #treediagram
Solved with 2 Methods.
There are 7 black, 5 red and 4 green balls in a bag.
Four balls are drawn without replacement.
Find the probability that
a. there will be exactly 3 red balls selected.
b. at least three balls will be red.
c. No red ball is selected. #GCSE #SAT #EQAO #IBSLmath
Solved with 2 Methods.
There are 7 black, 5 red and 4 green balls in a bag.
Four balls are drawn without replacement.
Find the probability that
a. there will be exactly 3 red balls selected.
b. at least three balls will be red.
c. No red ball is selected. #GCSE #SAT #EQAO #IBSLmath
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