The surnames of 40 children in a class arranged in alphabetical order. 16 of the surnames begins with O and 9 of the surname begins with A, 14, of the letters of the alphabet do not appear as the first letter of a surname
What is the probability that the surname of a child picked at random from the class begins with either O or A?
a
5/8
b
7/8
c
9/16
d
14/25
e
39/40
Explanation
Correct Option
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ENGINE
12 years ago
pls recall that 'either' in probability demands addition as 'or'demands multiplication,with these u kn solve d above problem.
