In an objective type examination, 120 objective type questions are there; each with 4 options P, Q, ….

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In an objective type examination, 120 objective type questions are there; each with 4 options P, Q, R and S. A candidate can choose either one of these options or can leave the question unanswered. How many different ways exist for answering this question paper?

Options :-

1. 5¹²⁰
2. 4¹²⁰
3. 120⁵
4. 120⁴

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