Find All Replacements (Less Than the Modulus) for the Question

question 134

Multiple Choice

Find all replacements (less than the modulus) for the question mark that make the statement true.
-6 ∙ ? ≡ 8 (mod 10)

• A) 1, 9
• B) 3
• C) 3, 8
• D)4, 8

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Definitions:

Remittance Advice

A document sent by a payer to a payee, providing details on the payment of an invoice, including information on any adjustments or deductions taken.

Indemnity Plans

Health insurance plans that reimburse the insured for medical expenses regardless of the healthcare provider used.

Electronic Data Interchange

Electronic Data Interchange (EDI) is the computer-to-computer exchange of business documents in a standard electronic format between business partners.

Primary Health Care

Basic or initial healthcare services focusing on prevention, wellness, and treatment of common illnesses, accessible at a community level.