The number of different 5 digit numbers greater than 50000 that can be formed using the digits 0 , 1,2,3,4,5,6,7 , such that the sum of their first and last digits should not be more than 8 , is

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Correct answer: D. 4607

array lll Case I & 5 & 0 Case II & 5 & & 5 & 1 & 5 & 3 & 6 & 0 & 6 & 1 & 6 & 2 & 7 & 0 & 7 & 1 array 9 (8 8 8)=4608 but 50000 is not included, so total numbers 4608-1=4607

The number of different 5 digit numbers greater than 50000 that can be formed using the digits 0 , 1,2,3,4,5,6,7 , such that the sum of their first and last digits should not be more than 8 , is

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