Aspire Faculty ID #16579 · Topic: NIMCET 2008 · Just now
NIMCET 2008

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?

Solution

$\text{Each question has 5 choices (4 options + leave blank).}$  

$\text{Total number of ways } = 5 \times 5 \times \cdots \times 5 \text{ (120 times)}$  

$= 5^{120}$  

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