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In a row of boys, A is thirteenth from the left and D is seventeenth from the right. If in this row A is eleventh from the right, then what is the position of D from the left?
1. 6th
2. 7th
3. 10th
4. 12th

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Best answer
Correct Answer - Option 2 : 7th

Given,

A's position from left = 13

A's position from right = 11.

Total number of boys in the row = Position of A from left + position of A from right - 1

= 13 + 11 - 1

= 23

So, there are 23 boys in the row.

Given, position of D from right = 17.

Let position of D from left be x

Total number of boys in the row = Position of D from left + position of D from right - 1

23 = x + 17 - 1

x = 23 - 17 + 1

= 7.

So, D is seventh from the left.

Hence, the correct answer is "7th".

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