RRB NTPC · Question 91
Consider the following information and answer questions based on it. Seven bottles colored — brown, blue, black, violet, white, indigo and purple are kept in a row, in random order, from left to right such that the — 1. White and purple bottles are not at either extremes. 2. Brown bottle is to the immediate right of violet bottle and to the immediate left of the white bottle. 3. White, violet and brown bottles are not at the center. 4. Black bottle is to the immediate left of purple bottle. 5. Blue bottle is neither second last nor at either extremes. Bottles at the extreme right and left ends are A. Violet and purple B. Indigo and violet C. Black and indigo D. Black and violet
Show answer & explanation
Answer: (A) B
Explanation
Violet–Brown–White must stand together, and none of them is in the centre or allows White at an end; the only fit is positions 1–3. Black–Purple must be together with Purple not at the end, and Blue must avoid places 6 and 7, so Blue is 4th, Black 5th, Purple 6th and Indigo 7th. The row is Violet, Brown, White, Blue, Black, Purple, Indigo, so the ends are Indigo and Violet.