Permutation and CombinationMedium
Question
Sameer has to make a telephone call to his friend Harish, Unfortunately he does not remember the 7 digit phone number. But he remembers that the first three digits are 635 or 674, the number is odd and there is exactly one 9 in the number. The maximum number of trials that Sameer has to make to be successful is -
Options
A.10,000
B.3402
C.3200
D.5000
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