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Question
In a row of 35 children, M is 15th from the right end and there are 10 children between M and R. What is R's position from the left end of the row?
In a row of 35 children, M is 15th from the right end and there are 10 children between M and R. What is R's position from the left end of the row?
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Solution
The correct option is D Data inadequate
Case I: In a row of 35 children, M is 15th from the right end.
R's position from the right, 15 + 10 + 1 = 26th
R is 26th positions from the right.
Position of R from the left end of the row.
= (35 - 26) + 1 = 9 + 1 = 10th
Case II:
Position of R from the left,
= 35 - 5 + 1
= 30 + 1 = 31st
Case I: In a row of 35 children, M is 15th from the right end.
R's position from the right, 15 + 10 + 1 = 26th
R is 26th positions from the right.
Position of R from the left end of the row.
= (35 - 26) + 1 = 9 + 1 = 10th
Case II:
Position of R from the left,
= 35 - 5 + 1
= 30 + 1 = 31st
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