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प्रश्न
Count the total number of ways of answering 6 objective type questions, each question having 4 choices
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उत्तर
Count the total number of ways of answering 6 objective type questions, each question having 4 choices.
One question can be answered in 4 ways
Two questions can be answered in 4 × 4 = 42 ways
∴ Six questions can be answered in 46 ways
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