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if a number is choosen between 100 and 999 includeing these
numberrs what is the provbabilty that the number selected
does not contain a 7 is
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Answer Posted / naveen
no. of occurrences of 7 in
100-199 =
107,117,127,137,147,157,167,170,171,172,173,174,175,176,177,178,
179,187,197 =19
lly for
200-299=19
300-399=19
400-499=19
500-599=19
600-699=19
now
700-799=100
800-899=19
900-999=19
total =8*19+100=152+100=252
probability = 1-(252/899)=0.71
| Is This Answer Correct ? | 5 Yes | 8 No |
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