<span>d.5,5,5,5. A prime number is a number only divisible by 1 and itself. 1 is not a prime number.</span>
Answer:A standard form is a form of writing a given mathematical concept like an equation, number, or an expression in a form that follows certain rules. Representing very large or very small numbers concisely, the standard form is used. For example, 4.5 billion years is written as 4,500,000,000 years.
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