Question 346633
Expand the binomial (a+b)^10 Let a=.75 and b=.25
a^10=.0563 all wrong
10a^9b=.1877
45a^8b^2=.2816
120a^7b^3=.2503
210a^6b^4=.1460 six wrong
==========>.9219
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1-.9219=.0781 The probability that he gets at least half right.
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Ed