Questions: Is the number 1.98 × 10^2 written in scientific notation, engineering notation, both, or neither? - scientific notation - both - engineering notation - neither

Solution Steps

• Scientific notation requires a number to be written in the form \(a \times 10^{n}\), where \(1 \leq |a| < 10\) and \(n\) is an integer.
• Engineering notation requires a number to be written in the form \(a \times 10^{n}\), where \(n\) is a multiple of 3 and \(1 \leq |a| < 1000\).

• The number \(1.98 \times 10^{2}\) has \(a = 1.98\) and \(n = 2\).
• Check if \(1.98\) satisfies \(1 \leq |a| < 10\): Yes, it does.
• Check if \(n = 2\) is a multiple of 3: No, it is not.

• Since \(1.98 \times 10^{2}\) satisfies the condition for scientific notation but not for engineering notation, it is written in scientific notation only.

Final Answer