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Category: Arithmetic

Given-N-in-base-10-is-158b687a-where-b-and-a-are-digits-a-lt-b-Given-N-2-a-4-1-Determinate-couples-a-b-such-that-11-divise-N-2-Determinate-couples-a-b-such-that-3-and-25-divise-N-thanks

Question Number 121568 by mathocean1 last updated on 09/Nov/20 Given:Ninbase10is158b687awherebandaaredigits(a<b).Given:N2+a[4].1)Determinatecouples(a;b)suchthat11diviseN.2)Determinatecouples(a;b)$$\mathrm{such}\:\mathrm{that}\:\mathrm{3}\:\mathrm{and}\:\mathrm{25}\:\mathrm{divise}\:\mathrm{N}. \