how many 3 digit numbers are possible using the digits 0,1,4,5,7 and 9?

• if its not mentioned in the ques then we must consider as repitation is allowed
  hence in 1 st place 5 ways(0 is not allowed)
  2nd place in 6 ways
  3rd in 6 ways
  =>5*6*6=180 ways
• 11 years agoHelpfull: Yes(29) No(4)
• (NOTE: in question it is not provided repetition of digits is allowed or not
  i take it as repitation is not allowed)
  possibilities of first digit = 1,4,5,7,9 = 5 ways (0 cant be put as 1st)
  possibilities of second digit = 5 ways (0 can be put here and one digit has been placed as frist digit so rest digits are 5)
  possibilities of third digit = 4 ways
  total ways = 5 x 5 x 4 = 100 ways ans
  
• 11 years agoHelpfull: Yes(15) No(4)
• 5*6*6=180;
  
• 11 years agoHelpfull: Yes(2) No(1)
• 5*6*6=180ways
• 11 years agoHelpfull: Yes(1) No(0)