Railways PYQCBT 1 2016

RRB NTPC · Question 74

Consider the following information and answer the questions based on it. Out of the 75 birders, 15 wanted to see only sunbird, 10 wanted to see only flycatcher, 12 wanted to see both sunbird and nuthatch, 15 wanted to see only bee-eater, 13 wanted to see both sunbird and bee-eater, 5 wanted to see both flycatcher and nuthatch and the remaining wanted to see only nuthatch. The ratio of birders who like nuthatch to those who like bee-eaters is A. 11/14 B. 10/7 C. 11/20 D. 30/8

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (C) A

Explanation

Nuthatch watchers = 12 (with sunbird) + 5 (with flycatcher) + 5 (only) = 22. Bee-eater watchers = 15 (only) + 13 (with sunbird) = 28. Ratio = 22/28 = 11/14.