When x is divided by 10, the quotient is y with a remainder of 4. If x and y both are positive integers, what is the remainder when x is divided by 5?

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সঠিক উত্তর: । ব্যাখ্যা: Given $x = 10y + 4$. When $x$ is divided by $5$: $x/5 = (10y + 4)/5 = 10y/5 + 4/5 = 2y + 4/5$. Since $10y$ is divisible by $5$, the remainder when $x$ is divided by $5$ is the remainder when $4$ is divided by $5$, which is $4$.