The sum of the digits of 1 874 (1 + 8 + 7 + 4) is equal to 20. How many natural numbers smaller than 10 000 have a sum of their digits equal

Question

The sum of the digits of 1 874 (1 + 8 + 7 + 4) is equal to 20. How many natural numbers smaller than 10 000 have a sum of their digits equal to 34?
A. 8
B. 9
C. 12
D. 10
E. 11
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Trúc Chi 1 year 2021-08-14T15:00:44+00:00 1 Answers 4 views 0

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  1. linhdan
    0
    2021-08-14T15:01:47+00:00
    Reply

    the answer is c, & b

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