Reasoning Class 5 Possible Combinations

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

How many different 3-digit numbers can be formed using the digits 4, 0, and 7, without repeating any digit?

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Answer: B. 4

Answer: B) 4
Explanation: A number cannot start with 0. The possible combinations are 407, 470, 704, and 740. Since 047 and 074 are 2-digit numbers, they are not counted.

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How many different 3-digit numbers can be formed using the digits 4, 0, and 7, without repeating any digit?

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