In a row of students, Sunita is 9th from the left and Sohan is 12th from the right. When they interchange their places, Sunita became 19th from the left. How many students were there in a row?

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Solution

The correct option is C 30
When their places are interchanged, Sunita become 19th from the left and 12th from the right.
Thus for Sunita: Tr = 12, Br = 19
$\displaystyle \therefore $ Number of students in a row= 12+ 19-1=30
The choice is (c).

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In a row of students, Sunita is 9th from the left and Sohan is 12th from the right. When they interchange their places, Sunita became 19th from the left. How many students were there in a row?

The correct option is C 30When their places are interchanged, Sunita become 19th from the left and 12th from the right.Thus for Sunita: Tr = 12, Br = 19$\displaystyle \therefore $ Number of students in a row= 12+ 19-1=30The choice is (c).

The correct option is C 30
When their places are interchanged, Sunita become 19th from the left and 12th from the right.
Thus for Sunita: Tr = 12, Br = 19
$\displaystyle \therefore $ Number of students in a row= 12+ 19-1=30
The choice is (c).