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Quantitative Aptitude
Number System
Permutations
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1
Using digits 2, 3, 5, 6, 9 with repetition allowed, how many unique three-digit codes can be created?
0:00
120
240
144
720
None of these
Solution:
Step 1: Choices for each digit = 5 Step 2: Total combinations = 5 × 5 × 5 = 125 Step 3: None of the provided options match the correct answer of 125
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