15. Let a be a positive integer, where the positive difference of every two digits of ain base 10 are all written on a board. If some of the numbers are erased and onlythe numbers 2, 0, 2 and 2 are left, what is the least possible value of a?(A) 1011(B) 1112(C) 113(D) 2000(E) 2022O A

Here, For 1113, | 1-1 | =0 , | 1-3 | = |-2| = 2 For 2000, |2-0|= 2, |0-0|= 0 For 2022,…

Answered: , Let a be a positive integer, where…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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, Let a be a positive integer, where the positive difference of every two digits of a in base 10 are all written on a board. If some of the numbers are erased and only the numbers 2, 0, 2 and 2 are left, what is the least possible value of a? (A) 1011 (B) 1112 (C) 1113 (D) 2000 (E) 2022 D B