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In a row of 51 students, facing north, Tinu is 24th from the left end. If Shivangi is 11th to the right of Tinu, what is Shivangi's position from the right end of the row?
18th
16th
15th
17th
17th
In a row, the position from the right is (Total students - Position from left + 1). Use this to find Shivangi's position from the left first, then convert to right.
In a row, the position from the right is (Total students - Position from left + 1). Use this to find Shivangi's position from the left first, then convert to right.
Determine Shivangi's position from the left
Tinu is 24th from the left. Shivangi is 11 places to the right of Tinu. So, Shivangi's position from the left = 24 + 11 = 35th.
Calculate position from the right end
The formula for position from the right is (Total students - Position from left + 1). Here, Total = 51 and Shivangi's position from left = 35. Therefore, 51 - 35 + 1 = 16 + 1 = 17.
A: Incorrect, 18th is 34th from the left. B: Incorrect, 16th is 36th from the left. C: Incorrect, 15th is 37th from the left.
D is correct because 51 - (24 + 11) + 1 = 17th position from the right.
Remember the universal formula for rank conversion: Rank from Left + Rank from Right = Total + 1. It works for any row-based seating problem.
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