self
Maths Puzzle
the latest registration number issued by the delhi motor vehicle registration authority is DL-5S-2234.if all the numbers and alphabets before this have been used up then find how many vehicles have a registration number starting with DL-5
Read Solution (Total 3)
-
- 182216 ans..
alphabets from a to r has already been used i.e. 18 alphabets and each alphabet can use 9999 numbers therefore 18*9999+2234=182216 - 11 years agoHelpfull: Yes(8) No(1)
- DL-5______ can be filled as 1st place can be A-Z,next will be 0000-9999
so upto s,18 letters possible,1000 number possible at after each letter
hence from DL-5A0000 to Dl-5R9999=18*10000=180000
Dl-5S0000 to DL-5S2234=1*2235=2235
no.of vehicles have a registration number starting with DL-5=182235 - 11 years agoHelpfull: Yes(6) No(1)
- after 5 ,we can have T U V W X Y Z and the four number digits can be filled in 9^4 ways
hence toatal registration number is 7*9*9*9*9= 45927
45927 is the answer - 11 years agoHelpfull: Yes(1) No(5)
self Other Question