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(19)¹² × (19)⁸ ÷ (19)⁴ = (19)?

This question was previously asked in
CSIR-CLRI JSA 2024 Official Paper-I (Held On: 16 Feb, 2025)
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  1. 24
  2. 8
  3. 6
  4. 16

Answer (Detailed Solution Below)

Option 4 : 16
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Detailed Solution

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Given:

(19)12 × (19)8 ÷ (19)4 = (19)?

Formula used:

am × an ÷ ap = a(m+n-p)

Calculations:

(19)12 × (19)8 ÷ (19)4 = (19)?

⇒ (19)(12+8-4) = (19)?

⇒ (19)16 = (19)?

⇒ ? = 16

∴ The correct answer is option (4).

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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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