Multiple choice general knowledge math & puzzles

The position of the first and the sixth digits in number 5314278906 are interchanged. Similarly the position of the second and the saventh digits are interchanged and so on. Which of the following will be the fourth from the right end after the rearrangemenr?

  1. 3

  2. 1

  3. 4

  4. 5

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The number is 5314278906. Interchanging 1st-6th, 2nd-7th, etc., results in 7890653142. Counting from the right end: 2 (1st), 4 (2nd), 1 (3rd), 3 (4th). Thus, 3 is the fourth digit from the right. The logic follows a simple block swap of the two halves.