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Kokumin Nenkin (National Pension) Calculator Knowledge Check

Sharpen your kokumin nenkin (national pension) calculator skills with algorithmically generated problems. Each attempt produces unique values to test your formula knowledge.

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If both you and your spouse are self-employed (Category 1 insured) and pay the flat monthly rate of 16800 yen each, how much do you pay together in total over a period of 1 years?

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