For the joint density fxy(x, y) = x2 + Cy; 0 ≤ x ≤ 1, 0 ≤ y ≤ 1,  the value of constant C is:

This question was previously asked in
SSC CGL Tier-II ( JSO ) 2019 Official Paper ( Held On : 17 Nov 2020 )
View all SSC CGL Papers >
  1. 4/3
  2. 1/3
  3. 1
  4. 2/3

Answer (Detailed Solution Below)

Option 1 : 4/3
super-pass-live
Free
SSC CGL Tier 1 2025 Full Test - 01
3.5 Lakh Users
100 Questions 200 Marks 60 Mins

Detailed Solution

Download Solution PDF

Concept used

We know that the probability of joint density \(\iint \)fxy(xy)dxdy

Calculation

\(\mathop \iint \limits_{x = 0y = 0}^{x = 1y = 1} \) (x2 + Cy)dxdy = 1

After integration we get

⇒ (x3/3)10 + C(y2/2)10 = 1

⇒ (1/3) + (1/2)C = 1

⇒ (1/2)C = 1 – 1/3

⇒ C(1/2) = 2/3

⇒ C = 4/3

∴ The value of C is 4/3

Latest SSC CGL Updates

Last updated on Jul 17, 2025

-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.

-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
->  HSSC CET Admit Card 2025 has been released @hssc.gov.in

->  Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.

-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.

-> The CGL Eligibility is a bachelor’s degree in any discipline.

-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.

-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.

More Types of Probability Questions

More Probability and Statistics Questions

Get Free Access Now
Hot Links: teen patti master plus teen patti joy 51 bonus teen patti download apk teen patti master 2025 teen patti joy official