Mathematics

Which of the following is equal to 1? 1. 15^2 + 15^-2 2. 15^2 - 15^-2 3. 15^2 × 15^-2 4. 15^2/15^-2

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Answer

Simplifying option 3,

⇒ 152 × 15-2

⇒ 152 - 2

⇒ 150

⇒ 1.

Hence, option 3 is the correct option.

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