If 2 is added to each even digit and 2 is added to each odd digit in the number 5217643, what will be the sum of the first digit from the left and the first digit from the right in the new number thus formed?

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NTPC Graduate Tier 1

2025 • 06 May, 2025 • Shift-1

If 2 is added to each even digit and 2 is added to each odd digit in the number 5217643, what will be the sum of the first digit from the left and the first digit from the right in the new number thus formed?

Correct Answer

Rule Understanding: The instruction explicitly states to add 2 to both even and odd digits. Functionally, this means we simply add 2 to every single digit in th......

💡 Analysis & Explanation

Rule Understanding ▼

The instruction explicitly states to add 2 to both even and odd digits. Functionally, this means we simply add 2 to every single digit in the given sequence.

Transformation Step ▼

Applying this uniform addition to '5217643' converts it digit-by-digit into the new string '7439865' (e.g., 5+2=7, 2+2=4, etc.).

Position Extraction ▼

Identifying the required targets from the newly formed number, the first digit from the left is 7, and the first digit from the right is 5.

Final Calculation ▼

Adding these two boundary digits together yields 7 + 5 = 12.

Conclusion ▼

The sum of the specified outer digits is 12.

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If 2 is added to each even digit and 2 is added to each odd digit in the number 5217643, what will be the sum of the first digit from the left and the first digit from the right in the new number thus formed?