Question

If the first and second digits in the sequence 5 9 8 1 3 2 7 4 3 8 are interchanged. Also the third and fourth digits, the fifth and sixth digits and so on, then which digit would be the seventh counting to your left from the last digit?

• A. $1$
• B. $4$
• C. $7$
• D. $8$

Answer 1

The correct option is D $8$

Given : $5,9,8,1,3,2,7,4,3,8$

Interchanging 1st and 2nd digit, we get $9,5,8,1,3,2,7,4,3,8$
Interchanging 3rd and 4th digit, we get $9,5,1,8,3,2,7,4,3,8$

Interchanging 5th and 6th digit, we get $9,5,1,8,2,3,7,4,3,8$

Interchanging 7th and 8th digit, we get $9,5,1,8,2,3,4,7,3,8$

Interchanging 9th and 10th digit, we get $9,5,1,8,2,3,7,4,8,3$

The new sequence becomes $9,5,1,8,2,3,7,4,8,3$.

Then counting to the left, the seventh number is $8$.