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How to solve the above image please explain ...........................

How to solve the above image please explain ...........................

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Grade:11

1 Answers

Yash Chourasiya
askIITians Faculty 256 Points
2 years ago
Hello students,

Integers between1and1000000will be1,2,3,4,5or6digits.
And given the sum of digits=18
Thus we need to obtain the number of solutions of the equation
x1​+x2​+x3​+x4​+x5​+x6​=18...(1)
where0≤xi​≤9,i=1,2,3,4,5,6

For further solution please see the attachment.
643-725_answer 1.png
I hope this answer will help you.

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