# Average Number of Arms

Try out this probability question. It may seem very simple but think twice before giving the answer

What is the probability that the next person you meet has an above average number of arms?

1. Impossible
2. Unlikely
3. Likely
4. Very Likely
5. Certain

#### Vineet Patawari

Hi, I'm Vineet Patawari. I fell in love with numbers after being scared of them for quite some time. Now, I'm here to make you feel comfortable with numbers and help you get rid of Math Phobia!

## 25 thoughts to “Average Number of Arms”

1. Krishna says:

|Very likely

2. Krishna says:

Very likely

3. win hai says:

hai friends, there is every possibility the man u met next has above average number of arms( ammunation,gun ,pistol,revolver etc)

4. YOGI says:

Hey !!! ……There are two things to notice.
Less than avg arms=Either 1 arm or No arm.
Above avg arm=Both arms.
total conditions=Either 1 + No arm + Both arm.
Requirment is Above avg arms means >1
so mathmetically its = 1/(1+1+1)=1/3=33.33% MEANS <50%
Hence ans is UNLIKELY…..

5. suresh says:

Unlucky

6. Rajendra says:

It is quite possible so the answer should be very likely.

7. rohit says:

impossible

8. mannu says:

mistake
*avg no. of arms must be(slightly) 0.5 (VERY LIKELY)
as P=(100+5)/130

1. mannu says:

well i donno why the comm. doesnt showing less than sign
so here it is again
avg no. of arms must be(slightly) less than 2
hence probability must be greater than 0.5(very likely)
as P=(100+5)/130

2. mahe says:

i think certain… bcoz nthin s impossibl na

9. mannu says:

lets assume….there are 100 ppl with two arms
25 ppl with one arm
and 5 ppl with more then two arms
now as 25 is > 5
then avg no. of arms must be(slightly) 0.5 (VERY LIKELY)
as P=(100+5)/130

10. Deepak Bishnoi says:

Very Likely.(mostly a person wid two arms or in any chance a handicaped with one complte arm)
avg arms<2

11. Unlikely, not impossible as people are born with more than 2 arms too.

12. Pratik Gupta says:

IMPOSSIBLE

13. Asish says:

Certain … coz the avg must be below 2

and i will see a person with 2 arms just now …

14. k.m.sarma says:

likely

15. GUJJAR says:

We know that the avg no. of arms is surely less than 2 ….
let us suppose it is 1.8… it is close to 2 becoz there are vry less no of handicapped as compared to normal…
now there is a 50% probability that either the next person is below 1.8 or above 1.8….
hence among the given options

likely is the appropriate ans..

1. Hey Gujjar,

Well explained. Though “very likely” is the correct answer

16. Suhail says:

Very Likely ðŸ™‚

17. Nandeesh says:

Very likely
(since average number of arms is less than 2 since there are many handicapped persons in the world)

18. impossible,……………how can it be?

19. aks says:

impossible

20. Avinash Kapoor says:

Likley

1. Roshan says:

Certail