Question

there are 100 pages in a book if a page of book is opened at random then the probability that the number on the page is 2 digit numbers made up with the same digit is
1)8/100
2)1/10
3)9/100
4)8/10​


faltu lokanni please un fol low kara mala ​

Answer 1

Answer:

3.9/10 is the correct answer

Step-by-step explanation:

sample space( s)

={1,2,3,..,100}

n(s)=100.

Let Event A: The p.g. is two digit no made up with same digits.

A={11,22,33,44,55 66 77,88,99}

n(A)=9

P(A)=n(A)/n(S)

=9/100

Answer 2

Answer:

Sample Space (or) No. of total outcomes = 100

(Since 100 pages are in the book)

We must find the probability such that the number on the page is a 2 digit number containing same digits. Hence the number of favorable outcomes are:

No. of Favorable outcomes = { 11, 22, 33, 44, 55, 66, 77, 88, 99}

Hence No. of favorable outcomes = 9

Hence the probability is calculated as:

$\boxed{ \text{Probability} = \dfrac{ \text{No of favorable outcomes}}{\text{Sample Space}}}$

$\implies P(E) = \dfrac{N(E)}{N(S)}\\\\\\\implies \boxed{ \bf{P(E) = \dfrac{9}{100}}}$

Hence the answer is 9/100 which is Option (3).

Hope it helps!

Have a nice day (^_^)