Courses

Get the App

True/False: Probability | JEE Advanced Notes | EduRev

Maths 35 Years JEE Main & Advanced Past year Papers

JEE : True/False: Probability | JEE Advanced Notes | EduRev

The document True/False: Probability | JEE Advanced Notes | EduRev is a part of the JEE Course Maths 35 Years JEE Main & Advanced Past year Papers.

All you need of JEE at this link: JEE

Q. 1. If the letters of the word “Assassin” are written down at random in a row, the probability that no two S’s occur together is 1/35 (1983 - 1 Mark)

Ans. Sol. Let E be the event “No two S's occur together”.
A, A, I, N can be arranged in True/False: Probability | JEE Advanced Notes | EduRev ways

– A – A – I – N – Creating 5 places for 4 S. Out of 5 places 4 can be selected in ⁵C₄= 5 ways.

\ No two S’s occur together in = 12 × 5 = 60 ways Total no.of arranging all letters of word ‘assassin’

True/False: Probability | JEE Advanced Notes | EduRev

\ Req. prob. = True/False: Probability | JEE Advanced Notes | EduRev \ Statement is False.

Q.2. If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is 0.5. (1989 - 1 Mark)

Ans. Sol. P (A ∪ B) = P (A) + P (B) – P (A ∩ B)
= P (A) + P (B) – P (A) P (B)
[∵A and B are independent events] = 0.2 + 0.3 – 0.2 × 0.3 = 0.5 – 0.06 = 0.44 ≠ 0.5
\ The statement is false.

Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Download EduRev app here for JEE preparation.

Up next

Author

Shiksha Academy

Views

Rating

4.9

Description

True/False: Probability | JEE Advanced Notes | EduRev notes for JEE is made by best teachers who have written some of the best books of JEE. It has gotten 2 views and also has 4.9 rating. You can download Free True/False: Probability | JEE Advanced Notes | EduRev pdf from EduRev by using search above. You can also find True/False: Probability | JEE Advanced Notes | EduRev ppt and other JEE slides as well. If you want True/False: Probability | JEE Advanced Notes | EduRev Tests & Videos, you can search for the same too. JEE True/False: Probability | JEE Advanced Notes | EduRev Summary and Exercise are very important for perfect preparation. You can see some True/False: Probability | JEE Advanced Notes | EduRev sample questions with examples at the bottom of this page. Complete True/False: Probability | JEE Advanced Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out JEE lecture & lessons summary in the same course for JEE Syllabus. EduRev is like a wikipedia just for education and the True/False: Probability | JEE Advanced Notes | EduRev images and diagram are even better than Byjus! Do check out the sample questions of True/False: Probability | JEE Advanced Notes | EduRev for JEE, the answers and examples explain the meaning of chapter in the best manner. This is your solution of True/False: Probability | JEE Advanced Notes | EduRev search giving you solved answers for the same. To Study True/False: Probability | JEE Advanced Notes | EduRev for JEE this is your one stop solution.

Maths 35 Years JEE Main & Advanced Past year Papers

111 docs|70 tests

Up next

Extra Questions

practice quizzes

mock tests for examination