Aspire Faculty ID #13975 · Topic: JAMIA MILLIA ISLAMIA MCA 2020 · Just now
JAMIA MILLIA ISLAMIA MCA 2020

Which amount of postage can be formed using just 4-cent and 11-cent stamps?

Solution

Postage combinations possible = $4x + 11y$. The smallest value not possible is given by Frobenius number $= ab - a - b = 4\times11 - 4 - 11 = 29$. Hence, every amount $\ge 30$ can be formed.

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