| February 02, 2008 03:23:54 |
#1 |
| subhro jana |
Member Since: February 2008 Total Comments: 3 |
RE: How many distinct car numbers can be formed using two letters and three digits? The two letters must be distinct and first digit should be non zero?
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the two letters can be chosen in 26p2 ways
the first digit can be chosen in 9 ways(excepting 0)
2nd digit in 10 ways
3rd digit also in 10 ways.
so the three no.s can be chosen in 900(9*10*10).
along with the letters it can be chossen in 26p2*900 ways= 585000ways(plz. check calc.) |
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