Question : Directions: In a row at a bus stop, A is 7th from the left, and B is 9th from the right. They both interchange their positions. Now A becomes 11th from the left. How many people are there in the row?
Option 1: 10
Option 2: 20
Option 3: 19
Option 4: 18
Correct Answer: 19
Solution : Given: A is 7th from the left, and B is 9th from the right. They both interchange their positions. Now A becomes 11th from the left.
After interchanging the new position of A = 11th from the left Total number of persons = New position of A from left + B's position from right – 1 Total number of persons = 11 + 9 – 1 Total number of persons = 19
So, the total number of persons at a bus stop is 19. Hence, the third option is correct.
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