In a row at bus stop, A is 7th from the left and B is 9th from the right. They interchange their positions and A becomes 11th from the left. How many people are there in the row?

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Solution

The correct option is B 19
After interchanging their positions, the position of A from the left =11
then positions of A from the right =9
$∴$ The total no. of people in the row
=(9+11)-1=19

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In a row at bus stop, A is 7th from the left and B is 9th from the right. They interchange their positions and A becomes 11th from the left. How many people are there in the row?

The correct option is B 19After interchanging their positions, the position of A from the left =11 then positions of A from the right =9 ∴ The total no. of people in the row =(9+11)-1=19

The correct option is B 19
After interchanging their positions, the position of A from the left =11
then positions of A from the right =9
$∴$ The total no. of people in the row
=(9+11)-1=19