IIT JEE , AIEEE Forum - Mathematics , Algebra

idontknow

WHAT IS THE PROBABILITY THAT A NO. CHOSEN AT RANDOM FROM THE SET OF NATURAL NO.S CONTAINS THE NO. "7"?

SET OF NATURAL NO.S = 1,2,3,4,5,6, ... infinity

do tell me on what logic you get the answer... pls explain that...

chinnu

probability of occuring all the digits is same.

hence 10x=1[x=probability of occuring 1,2,3,4,..9,0)

so the ans is 1/10

rate me if its correct

thedumbheadwithnobrain

1/10 is not the correct answer

edison

I agree with chinnu.
The probability comes out to be 1/10

mukundmadhav

For one digit numbers it's 1/9

For two digit numbers it's 2/5

For three digit numbers it's 7/25

It's getting bigger, I don't think it's 1/10..

All events are not independent.. So I don't think you can use that logic..

Ask & Discuss Questions with Community & Experts