Let x be the number of 5 digit numbers sum of whose digits is even and y be the number of 5 digit numberssum of whose digits is odd, then

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x=y

x+y = 90,000

x= 45,000

x < y

answer is A.

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Detailed Solution

x =9 x 10 x 10 x 10 x 5 = 45000Similarly y= 45,000x = y & x+y= 90,000

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