Question

Frame a 4 digit plate which has 2 alphabets and 2 numbers. In how many ways can we frame the same?

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Answer 1

no.of alphabets=26 (a-z), no.of digits=10(0-9).  

ways of arranging two alphabets with out repetition=26*25;

ways of forming two digits without repetition=10*9

no.of combinations of forming the number on number plate= 26*25*10*9=58500

Hope this helps!