Study the following five numbers and answer the question given below:
135 269 667 581 783
What will be the last digit (unit place) of the second-largest number when they are arranged in ascending order after reversing the positions of the digits within each number?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 6
1. Reverse the digits of each number
First, we reverse the positions of the digits for each of the given numbers:
- $135 \rightarrow \mathbf{531}$
- $269 \rightarrow \mathbf{962}$
- $667 \rightarrow \mathbf{766}$
- $581 \rightarrow \mathbf{185}$
- $783 \rightarrow \mathbf{387}$
2. Arrange the reversed numbers in ascending order
Now, we arrange these new numbers from smallest to largest:
- $185$
- $387$
- $531$
- $766$ (Second-largest)
- $962$ (Largest)
3. Identify the unit digit of the second-largest number
The second-largest number in the sequence is $766$.
The last digit (unit place) of $766$ is $6$.