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In a town of 840 persons, it was seen that 450 persons read Hindi, 300 persons read English and 200 persons read both Hindi and English. What is the number of persons who read neither language?

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CSIR CERI JSA Official Paper-I (Held On: 2022)
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  1. 180
  2. 210
  3. 260
  4. 290

Answer (Detailed Solution Below)

Option 4 : 290
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Detailed Solution

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Given: Total persons in a town is 840

Persons who read Hindi = 450

Persons who read English = 300

Persons who read both Hindi and English = 200

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Persons who read neither Hindi nor English = Total persons in a town - (Persons who read Hindi + Persons who read English + Persons who read both Hindi and English)

= 840 - [450 + 300 - 200]

= 840 - 550

= 290

∴ The number of persons who read neither language is 290. 

Hence, "Option 4" is the correct answer.

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Latest CSIR Junior Secretariat Assistant Updates

Last updated on May 21, 2025

->The CSIR Junior Secretariat Assistant Provisional Response Sheet has been released on 21st May 2025 at the official website.

-> The CSIR Junior Secretariat Assistant Notification 2025 written examination dates has been released for Advt No. CRRI/02/PC/JSA-JST/2025.

-> Candidates had applied online from 22nd March to 21st April 2025.  

-> The CSIR JSA salary ranges from INR 19,900 - INR 63,200 (Indian Institute of Petroleum, Dehradun) and INR 35,600 (Indian Institute of Toxicology Research).

-> The selection of candidates for this post will be based on a Written Exam, followed by a Computer Typing Test.

-> Prepare for the exam with CSIR Junior Secretariat Assistant Previous Year Papers.

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