- A7
- B5
- C6
- D12
Step-by-Step Solution
All three digits are non-zero, so any of the 3 can lead. The arrangements of 3 distinct digits in 3 fixed positions = 1 = 6 numbers (e.g. 1.47, 1.74, 4.17, 4.71, 7.14, 7.41).
Answer: C) 6
Using the digits 1, 4 and 7 exactly once each (one digit before the point, two after it, leading digit not zero),
how many different decimal numbers can be formed in this 1-digit-then-2-digit pattern?
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