The number of multiples of 4 among all 10 digit numbers is
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Answer:
225*10^7
Step-by-step explanation:
10 digit numbers start at 10^9 and end at (10^10)-1.
No of multiples of 4 from 1 to 10^10-1:
(10^10/4) -1.
No of multiples of 4 from 1 to 10^9 -1:
(10^9/4)-1.
Thus, no of multiples of 4 from 10^9 to (10^10 ) -1:
{(10^10/4) -1} - {(10^9/4)-1}
= 10^10/4 - 10^9/4
= 10^9(10-1)/4
= 10^7*25*9
= 225*10^7.
Hope that helps
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