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The age of the universe is 5 `xx` 10¹⁷s. The age of universe in years is :

1. 158 `xx` 10⁶

2. 158 `xx` 10⁹

3. 158 `xx` 10⁸

4. 158 `xx` 10¹¹

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about 11 years ago

Eby hanson

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