Reasoning Class 5 Possible Combinations

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

Take two digits 4 and 5. From them make four digit numbers,using both the digit equal number of times. How many different numbers can be formed?

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Answer: B. 6

The correct answer is B. 6.
To form a four-digit number using 4 and 5 an equal number of times, you must use two 4s and two 5s. The possible arrangements are: 4455, 4545, 4554, 5544, 5454, and 5445.

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Take two digits 4 and 5. From them make four digit numbers,using both the digit equal number of times. How many different numbers can be formed?

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