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517 325 639 841 792
What will be the first digit of the second highest number after the positions of only the 2nd, 3rd digits within each number are interchanged?
What will be the first digit of the second highest number after the positions of only the 2nd, 3rd digits within each number are interchanged?
- a)8
- b)2
- c)7
- d)9
Correct answer is option 'C'. Can you explain this answer?
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517 325 639 841 792What will be the first digit of the second highest ...
To find the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number, we need to follow these steps:
Step 1: Interchange the 2nd and 3rd digits within each number:
- 517 becomes 571
- 325 becomes 352
- 639 becomes 693
- 841 becomes 814
- 792 becomes 729
Step 2: Arrange the numbers in descending order:
- 839
- 793
- 752
- 571
- 425
Step 3: Identify the second highest number:
- The second highest number is 793.
Step 4: Find the first digit of the second highest number:
- The first digit of 793 is 7.
Therefore, the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number is 7.
Explanation:
The given numbers are 517, 325, 639, 841, and 792. We need to interchange the positions of the 2nd and 3rd digits within each number.
For example, in the first number 517, the 2nd digit is 1 and the 3rd digit is 7. Interchanging them gives us 571.
Following the same process, we get the following numbers: 571, 352, 693, 814, and 729.
Next, we arrange these numbers in descending order: 839, 793, 752, 571, and 425.
The second highest number is 793.
Finally, we determine the first digit of the second highest number, which is 7.
Hence, the correct answer is option C: 7.
Step 1: Interchange the 2nd and 3rd digits within each number:
- 517 becomes 571
- 325 becomes 352
- 639 becomes 693
- 841 becomes 814
- 792 becomes 729
Step 2: Arrange the numbers in descending order:
- 839
- 793
- 752
- 571
- 425
Step 3: Identify the second highest number:
- The second highest number is 793.
Step 4: Find the first digit of the second highest number:
- The first digit of 793 is 7.
Therefore, the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number is 7.
Explanation:
The given numbers are 517, 325, 639, 841, and 792. We need to interchange the positions of the 2nd and 3rd digits within each number.
For example, in the first number 517, the 2nd digit is 1 and the 3rd digit is 7. Interchanging them gives us 571.
Following the same process, we get the following numbers: 571, 352, 693, 814, and 729.
Next, we arrange these numbers in descending order: 839, 793, 752, 571, and 425.
The second highest number is 793.
Finally, we determine the first digit of the second highest number, which is 7.
Hence, the correct answer is option C: 7.
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517 325 639 841 792What will be the first digit of the second highest number after the positions of only the 2nd, 3rd digits within each number are interchanged?a)8b)2c)7d)9Correct answer is option 'C'. Can you explain this answer?
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