Test Index

JEE Advanced 2023 Paper 2 Solutions

PARAGRAPH II

Q. No 51 - 52
Consider the 6×6 square in the figure. Let A1,A2,...,A49 be the points of intersections (dots in the picture) in some order. We say that Ai and Aj are friends if they are adjacent along a row or along a column. Assume that each point Ai has an equal chance of being chosen.

(There are two questions based on PARAGRAPH “II”, the question given below is one of them)

Question : 51

Total: 52

Let pi be the probability that a randomly chosen point has i many friends, i=0,1,2,3,4. Let X be a random variable such that for i=0,1,2,3,4, the probability P(X=i)=pi. Then the value of 7E(X) is

Your Answer:

Validate

pi	0	0	4/49	20/49	25/49
Xi	0	1	2	3	4

Go to Question:

Prev Question

Next Question