Latest TCS Aptitude Question SOLUTION: A bag has 1, 3, 5, 7, 9,11 and 13 cm sticks. Find the probability that they they will form a triangle if 3 sticks are drawn?

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A bag has 1, 3, 5, 7, 9,11 and 13 cm sticks. Find the probability that they they will form a triangle if 3 sticks are drawn?

Asked In TCS max (10 years ago)

Solved max Read Solution (7)

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Read Solution (7) :

max  (10 years ago)

Answer: is 13/35
Total: =7C3=35
Fav: (3,5,7),(3,7,9),(3,9,11),(3,11,13),(5,7,9),(5,7,11),(5,9,11),(5,9,13),(5,11,13),
(7,9,11),(7,9,13),(7,11,13),(9,11,13)=total 13.
[Others are rejected because to form a triangle it is necessary that the sum of 2 small
sides must be greater than the third greatest side.]

Is this solution Helpfull? Yes (117) | No (3)  

Ashish kumar  (10 years ago)

Mr Max i think that the condition for triangle is any 2 side of a triangle should be greater than third side. i did'nt find your condition in any book

Is this solution Helpfull? Yes (7) | No (35)  

Guru Pranav  (10 years ago)

Its a very nice question, the answer will be 13/35.

Is this solution Helpfull? Yes (2) | No (1)  

ajit kumar mahato  (10 years ago)

7c3 ways so ans 13/35

Is this solution Helpfull? Yes (1) | No (3)  

Abhishek  (10 years ago)

33/35 is the ans

Is this solution Helpfull? Yes (1) | No (10)  

ashish kumar  (10 years ago)

hey max where is(157)???

Is this solution Helpfull? Yes | No (5)  

ANUBHA VERMA  (9 years ago)

13/35 it will be

Is this solution Helpfull? Yes | No   

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