1. 

In a given number 7834329513, we interchange the first and the second digits, the third and the fourth digit and so on. Then which digit will be sixth from the right?
A. 3
B. 2
C. 9
D. 4

Answer: Option B

Explanation:

Given number : 7 8 3 4 3 2 9 5 1 3

After interchanging the digits,
New number : 8 7 4 3 2 3 5 9 3 1

                                6th digit from right end