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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 10 of 200

Q10
ReasoningVenn Diagrams & Set Theory
Direction: The diagram shows the survey on a sample of 500 persons with respect to their knowledge of Bengali, Hindi and English. How many persons who do not know Hindi Language?
Direction: The diagram shows the survey on a sample of 500 persons with respect to their knowledge of Bengali, Hindi and English. How many persons who do not know Hindi Language?
  1. a.265
  2. b.200
  3. c.255
  4. d.201

Answer: (A) 265

In the diagram the Hindi circle contains 70 (Hindi only) + 65 (Hindi and Bengali) + 53 (all three) + 47 (Hindi and English) = 235 persons. Those who do not know Hindi are 500 − 235 = 265, which is also the sum of the remaining regions 120 + 62 + 83. 200, 255 and 201 miss one or more of these regions.

Q9 Whole paperQ11