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Following questions are based on the five four-digit numbers given below, Study the following numbers and answer the following question:
243 874 923 456 721
If we arrange all the digits within the numbers in increasing order from left, then how many numbers remain unchanged?
One
None
Three
Two
More than three
- To solve this, rearrange each set of digits in ascending order within each number.
- Number 243 becomes 234.
- Number 874 becomes 478.
- Number 923 becomes 239.
- Number 456 becomes 456.
- Number 721 becomes 127.
- After arranging, the only number that remains unchanged is 456.
- Option:2 None is incorrect because 456 remains unchanged.
- Option:4 Two and Option:3 Three are incorrect because only 456 is unchanged.
- Option:1 One is correct because only one number remains unchanged: 456.
- The correct answer is Option:1 One.
.
By: Parvesh Mehta ProfileResourcesReport error
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