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

Answer Posted / ajeet

100-199------19
similarly for all ranges till 999 except for:

700-799----100

total no.containing 7's= 19*8+100=252

Therefore,

probability=(900-252)/900
= 648/900
= 0.72

Is This Answer Correct ?    10 Yes 3 No



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