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What is Sumit's position from the right end in a row of children?

Statements:

1. There are 10 children between Sumit and Rajan.

2. Rajan is twentieth from the left end of the row of children.

  • A.1 alone is sufficient while 2 alone is not sufficient
  • B.2 alone is sufficient while 1 alone is not sufficient
  • C.Either 1 or 2 is sufficient
  • D.Neither 1 or 2 is sufficient

Answer: D

Correct answer: Neither 1 or 2 is sufficient

Statement 2 places Rajan twentieth from the left and statement 1 puts ten children between him and Sumit, which fixes Sumit’s position from the left as either ninth or thirty-first. But the total number of children in the row is never given, so the position from the right cannot be computed at all.

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