From 10000 lottery tickets numbered 1 to 10000 one ticket is drawn at random. What is the probabilit

Abhishek   11 years AGO

ans is 1/20;
total no divisible by 20
10000/20=500;
so the probability
500/10000=1/20

Like? Yes (23) | No (3)  

Anantharaman   11 years AGO

multiples of 20 in 100->5

multiples of 20 in 1000->50

multiples of 20 in 10000->500

The probability of getting a number divisible by 20-> 500/10000

=> 5/100
=> 1/20

Like? Yes (9) | No (2)  

richa ahuja   11 years AGO

20,40,60....10000
10000=20+(n-1)20
9980/20=499+1=500
probability=500/10000=1/20

Like? Yes (6) | No (2)  

Vaibhav Mishra   11 years AGO

Total number n(S)=10000
Let E be the event that number marked on ticket divisible by 20.
dividing 10000 by 20,we get 500
n(E)=500
probability P(E)=n(E)/n(S)
=500/10000
=(1/20)Ans

Like? Yes (5) | No (1)  

MUKESH KUMAR   11 years AGO

n(e)= 20
n(s)=10000

P(E)=n(e)/n(s)

P(E)=500/10000;

P(E)=1/20

Like? Yes (2) | No   

Ashok Chauhan   11 years AGO

Total outcomes=10000
Favourable outcomes(tickets numbered with a no. divisible by 20)= 10000/20=500
P(no. marked is divisible by 20)= 500/10000= 1/20

Like? Yes (2) | No   

Thejashwini G   11 years AGO

probablity of an event is given order of an event divided by total number of sample space.
here,the order of sample space is 10000 and the event={20,40,.....,10000} the order of an event is 500 probablity=500/10000=1/20

Like? Yes (2) | No   

rahul jha   11 years AGO

ans is 1/20;
10000/20=500;
so the probability
500/10000=1/20

Like? Yes (2) | No (1)  

ShAg   11 years AGO

first number divisible by 20 from 1-10000 is 'a'=20 and the last number is 'L'=10000. difference between the consecutively divisible numbers 'd'= 20 so we have from A.P.,
L=a+(n-1)d
=>10000=20(n-1)20
=>n=500
i.e. 500 numbers between 1-10000 are divisible by 20.
so probability = 500/10000 = 1/20

Like? Yes (1) | No   

ravi chandra singh   11 years AGO

total no which is divisiable by 20 in b/w 1 and 10000 is 500.

so, required probability=500/10000=1/20

Like? Yes (1) | No   

Suman Saurabh   11 years AGO

Number of ticket divisible by 20 = 10000/2=500

Hence probability = 500/10000=1/20

Like? Yes (2) | No (1)  

AISHWARYA   11 years AGO

500 obtained on dividing 10000 by 20
p(e)=500/10000=1/20

Like? Yes (1) | No   

Manikumar R   11 years AGO

for each 20 tickets one 20 divisible ticket is there

Like? Yes (1) | No   

Shashi Kumar Gupta   11 years AGO

500/10000 = 1/20

Like? Yes (1) | No   

RAJ MISHRA   11 years AGO

hence,total no. of drawn tickets is 10,000
so n(s)=10,000
let e be the event
n(e)=10,000/20=500
P(e)=n(e)/n(s)=500/10,000=1/20

Like? Yes (1) | No   

mandira kundu   11 years AGO

total no. of divisible by 20 btn 1 to 1000 is 50.so prob=50/1000
ie 1/20.

Like? Yes (1) | No   

IFFAT IRAM   11 years AGO

no. of no.s divisible by 20=500
probability of drawing a no. divisible by 20 = 500/10000
1/20

Like? Yes (1) | No   

Harleen Chadha   11 years AGO

No.'s divisible by 20 are 20, 40, 60.......10000
There are 500 terms that are divisible by 20
So, Required probability = 500/10000 = 1/20

Like? Yes (1) | No   

Ankit Shukla   11 years AGO

total number=10000/20=500
so probality=500/10000=1/20

Like? Yes (1) | No   

Soham Yadav   11 years AGO

No. divisible by 20 b/w 1 to 10000 = 10000/20 = 500

So probability = 500/10000 = 1/20

Like? Yes (1) | No   

Shuvankar Ghosh   11 years AGO

no of tickets those are divisible by 20 is 500
so,the probability 500/10000=1/20

Like? Yes (1) | No   

Balakumaran N.A   11 years AGO

n(S) = 10000.
n(E) = 500, obtained by dividing 10000 by 20.
Probability P(E) = n(S)/n(E) = 500/10000 = 1/20.

Like? Yes (2) | No (1)  

Parthiban C   11 years AGO

1000=20+(n-1)20
n=500
then,500/10000=1/20=ans

Like? Yes (1) | No   

nishant kumar   11 years AGO

Here n(s)=10000
on dividing 10000 by 20 we get 500
=>n(E)=500
The required probability,P(E)=n(E)/n(S)
500/10000= 1/20

Like? Yes (2) | No (1)  

LOGAN WOLVERINE   11 years AGO

total no which is divide by 20 is=10000/20=500;
possible ways to take one number in 10000 is 10000 chances.
so probability=n(A)/n(S);
=500/10000;
=1/20;
option 4.

Like? Yes (1) | No   

sayantan hazra   11 years AGO

Since nos divisible by 20 btwn 1 and 100 are 5....so btwn 1 and 1000: 50 nos are divisible by 20, btwn 1 and 10000.....500 nos are divisible by 20.
Hence, probability = 500/10000 = 1/20

Like? Yes (1) | No   

hcair   11 years AGO

there is 500 no. which is divisible by 20 in 1 to 10000.
probability = 500/10000=1/20.

Like? Yes (1) | No   

vaibhav rajhns   11 years AGO

no divisible by 20 series
20,40,........10000
here a=20 d=20 last term =10000
by applying ap
an=a+(n-1)d
10000=20+(n-1)*20
n=500

so p(div by 20)=no(outcomes)/no of sample
p=500/10000
=1/20

Like? Yes (1) | No   

sudipta sadhukhan   11 years AGO

there are 500 no between 1 to 10000 that can be divisible by 20
so no of favorable cases 500
so probability=(500C1)/(10000C1)=1/20

Like? Yes (2) | No (1)  

shankar   11 years AGO

multiples of 20 less than or equal to 10000 are
1*20=20
2*20=40
.
.
.
500*20=10000.
so there are 500 multiples of 20. (or intiger part of 10000/20=500)
so the probability is 500/10000= 1/20

Like? Yes (2) | No (1)  

supriya    11 years AGO

ap is 20,40,60.........,10000
10000=20+(n-1)20
n=500
probability=500/10000
=1/20

Like? Yes (1) | No   

Rashmi bharti   11 years AGO

First number divisible by 20 = a1 = 20;
Last Number divisible by 20 = s =10000;
10000=20+(n-1)20;
(n-1)20= 9980;
(n-1)=499;
n=500;
Sample Space = 1,2,3...10000
n(S)=10000;
Probability of number marked on ticket to be divisible by 20 = 500/10000=1/20
Answer is 1/20

Like? Yes (2) | No (1)  

Raju Sharma   11 years AGO

total no=10000/5=500
then select of one =500/10000

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ashiwani kumar singh   11 years AGO

1 to 100 have 20 no who divisble by 20 then
total no. 1 to 10000 divisble by 20=500
p=500/10000
p=1/20

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mohini gupta   11 years AGO

number divisible by 20 comes after 20 numbers...thats y...1/20

Like? Yes (1) | No   

Sudharsan   11 years AGO

to find the no of terms between 1 to 10000 divisible by 20
10000/20=500
so probability that the ticket no. is divisible by 20 is
500/10000= 1/20

Like? Yes (1) | No   

krishna   11 years AGO

units digit must be zero
tens digit can be occupied by 0,2,4,6,8 that is 5 ways
hundreds and thousands by 10 ways.
ten thousands by 0 nl and separaetely one number 10000 will be there and an extra nmber of ooooo is calculated .
so it is subtracted
5*10*5+1-1=500
probality=(500/10000)=1/20

Like? Yes (1) | No   

Niraj   11 years AGO

Favourable cases = number of tickets which is divisible by 20 = 10000/20 = 500
Total cases = selection of 1 ticket from 10000 tickets = 10000

So Probability = Favourable Cases / Total Cases
= 500 / 10000
= 1 / 20

Like? Yes (1) | No (1)  

Devendra Marghade   11 years AGO

Numbers divisible by 20 are 20,40,60,.....,10000
First number=20, last number=10000
If total numbers divisible by 20 are 'n'
Then 10000=20+(n-1)20, n=500
So probability=500/10000 =1/20

Like? Yes (1) | No (1)  

Madhu pericherla   11 years AGO

Number of tickets numbered such that it is divisible by 20 are(10000/20)=500
hence required probability=500/10000=1/20

Like? Yes (1) | No (1)  

sanjay kumar saha   11 years AGO

10000=20+(n-1)*20
n=(10000-20)/20+1
n=500
p=500/10000

Like? Yes (1) | No (1)  

KUNAL GAURAV   11 years AGO

Total favorable outcomes = 500
Total no. of outcomes = 10000

So, Required Probability = 500/10000 = 1/20

Like? Yes (1) | No (1)  

Hemant Kumar   11 years AGO

tickets numbered 1 to 10000 divisible by 20 = 10000/20 = 500

so the Probability will be 10000/500 = 20

so Answer will be 1/20

Like? Yes (1) | No (1)  

Mayuresh Srivastava   11 years AGO

No. of tickets that are divisible by 20
=10000/20=500
hence required probability=500/10000=1/20.

Like? Yes (1) | No (1)  

Sunil Kumar   11 years AGO

total no divided by 20= 500
total outcomes= 10000
P=(500/10000)=1/20

Like? Yes (1) | No (1)  

Jasmine Khan   11 years AGO

there are 500 numbers which are divisible by 20 from 1 to 10,000
prob=500C1/10,000C1=500/10,000=1/20

Like? Yes (1) | No (1)  

Ravi Kant Sharma   11 years AGO

10000/20=500
now 500 numbers select among 10000
so 500/10000=1/20

Like? Yes (1) | No (1)  

Chandni Maurya   11 years AGO

ans=(4) 1/20
consider AP series,
Tn=10000,d=20,a=20,n=?
Tn=a+(n-1)d
10000=20+(n-1)20
n=500
=>probability=500/10000=1/20

Like? Yes (1) | No (1)  

Jacky shevkani   11 years AGO

here our sample space is
n(s)=10000
and let a be the event of getting a ticket which is divisible by 20
therefore
n(a)=500

now probability of a will be
p(a)=n(a)/n(s)
p(a)=500/10000
p(a)=1/20

Like? Yes (1) | No (1)  

Rahul Kumar Mehta   11 years AGO

The number which is divisible by 20 in between 1 to
10000 will be

20........till 10000

here a=20 and l=10000

now (10000-20)/20 + 1 = 499+1=500

so total numbers which is divisible by 20 will be

500/10000= 1/20

Like? Yes (2) | No (2)  

NIDHI   11 years AGO

n(e)= 20
n(s)=10000

P(E)=n(e)/n(s)

P(E)=500/10000;

P(E)=1/20

Like? Yes (1) | No (1)  

Akshay Kumar Singh   11 years AGO

1 to 100 divisible by 20 equals to=5,
so 1 to 10000 div by 20 equals =500;
prova=500/10000=1/20.

Like? Yes (1) | No (1)  

ravi singh   11 years AGO

answer is 1/20

total case =10000

fabourable case= 10000/20=500

hence required probability is

P= 500/10000

hence answer is option 4

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TEJ PRAKASH TEWARI   11 years AGO

the numbers which are divisible by 20 are 10000/20

So probability=10000/(20*10000)=1/20

Like? Yes (1) | No (1)  

ALOK KUMAR   11 years AGO

1st no divisible by 20 is 20
last no divisible by 20 is 10000
so by formula of AP
l=a+(n-1)d
10000=20+(n-1)20
n=500

prob=no divisble by 20/total no
=500/10000
=1/20

Like? Yes (1) | No (1)  

Mariappan   11 years AGO

n(S) = 10000

Total numbers, that are divisible by 20 from 1 to 10000 = n(E)= 10000/20 = 500

P(E)= n(E)/n(S)

Therefore, P(E)= 500/10000

=> P(E)= 1/20 (Ans)

Like? Yes (1) | No (1)  

Rahul Rajak   11 years AGO

probability = favourable number of event/total number of event

total number of favourable event=10000/20=500
total number of event is 10000
therefore p=500/10000=1/20

Like? Yes (1) | No (1)  

FRANKLIN VIJAY   11 years AGO

No of tickets divis by 20 is
10000/20=500

req probablity is
500/10000=1/20

Like? Yes (1) | No (1)  

sekar28   11 years AGO

10000/20 = 500 nos are divisible by 20
so 500/10000 = 1/20

so the probability is 1/20

Like? Yes (1) | No (1)  

sachin verma   11 years AGO

the no. should be divisible by 20..so first no. is 20 nd last no. is 10000...so this is a.p series...whose
d=20,a=20,l=10000 so find total no. between 20 to 10000 we apply this formula
10000=20+(n-1)20.....so n comes 500...so the probility =
500/10000=1/20...

Like? Yes (1) | No (1)  

Hari Krishna   11 years AGO

sample space s= 10000
no's which are divisible by 20 = 10000/20
= 500

probability of occurrence is = 500/10000
= 1/20

Like? Yes (1) | No (1)  

nithya   11 years AGO

10,000/ 20 = 500 = n(e)
n(s)= 10000
p(a) = 500/ 10000 = 1/20

Like? Yes (1) | No (1)  

Vikram Saini   11 years AGO

total no. of ticket-10000
favourable no. of ticket-10000/20
500
so prob-500/10000
which is 1/20
option 4 is correct answer

Like? Yes (1) | No (1)  

komal   11 years AGO

divisible by 20 numbers are 500 numbers so
500/10000 is 1/20

Like? Yes (1) | No (1)  

SHIVANI PRAKASH   11 years AGO

no. of terms in the series:20,40,60....10000=500
so no. of terms divisible by 20=500
thus prob.=500/10000=1/20

Like? Yes (1) | No (1)  

jatin patware   11 years AGO

500/10000=1/20
so option 4 is correct

Like? Yes (1) | No (1)  

annsh verma   11 years AGO

because there are 500 numbers between 1 to 10000 which are divisible by 20 which is count by using arithmetic progression and then probability is 500/10000=1/20

Like? Yes (1) | No (1)