If a person is trying to dial a mobile number of a friend, where he has a doubt about the last two digits,then what is the probability that he dials a correct number ?

• for the last two digits,, both the numbers can be in done in 10 ways each,, so
  10 x 10 = 100 ways are there out of which only 1 is right.
  so 1/100
• 11 years agoHelpfull: Yes(3) No(1)
• 90
  
  10!/8!
• 11 years agoHelpfull: Yes(2) No(4)
• last 2 digit can hav no's in 100 ways
  n exactly 1 way is d r8 no.
  so requrd prob =1/100
• 11 years agoHelpfull: Yes(1) No(1)
• 1/100 is right
• 11 years agoHelpfull: Yes(1) No(1)