Latest TCS Aptitude Question SOLUTION: There is a toy train that can make 10 musical sounds. It makes 2 musical sounds after being defective. What is the probability that me musical sound would be produced 5 times conse

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(#M40002472) TCS Logical Reasoning question Keep an EYE

There is a toy train that can make 10 musical sounds. It makes 2 musical sounds after being
defective. What is the probability that me musical sound would be produced 5 times
consecutively? (1 of__)?

Solution

only two different tunes are there, so for making 5 consecutive music tunes of the same type, probability = (1/2)(1/2)(1/2)(1/2)(1/2)*2 = 1/16
last 2 is because of the two case (1) first tune all 5 times (2) second tune all 5 times
but here the question is based on odds, so answer should be (1/16)/[(1-(1/16)] = 1/15

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Asked In TCS preethi poosa (12 years ago)

Solved Read Solution (5)

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Read Solution (5) :

Vipul Panwar  (12 years ago)

(1/2)^5 + (1/2)^5
= 1/32 + 1/32 = 1/16

Is this solution Helpfull? Yes (20) | No (7)  

TAMILSELVAN DINESH  (12 years ago)

32 is ans.... 5 times 2 sounds....1 time prob is 1/2 ...so 5 times 1/2*5 so 1/32 is ans

Is this solution Helpfull? Yes (14) | No (15)  

yumnam girish  (12 years ago)

no of passible sound = 2
it is ask for 5 times
then probability= (1/2^5)

Is this solution Helpfull? Yes (7) | No (15)  

Anurag  (12 years ago)

I think answer would be 1 of 32 only.
There are two possibilities:
a) the train makes one out of 10 musical sounds.
b) the train is defective and makes 2 musical sounds.

each of the above two cases have probabilities = 1/2
but it is asked to produce 5 times consecutively and obviously the option b gets rejected as it can only produce 2, 4, 6, 8 sounds.

Therefore answer will be (1/2)^5.

Is this solution Helpfull? Yes (5) | No (15)  

DINESHWAR P  (4 years ago)

5 times 2 sounds....1 time prob is 1/2 ...so 5 times
so (1/2)^5=1/32 is ans

Is this solution Helpfull? Yes | No (1)  

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