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

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

Asked In TCS runa (12 years ago)

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Dr.Dipin Singh  (12 years ago)

First sound can by one one of two sounds.
probability that next time same sound will appear = 1/2
probability that next time same sound will appear = 1/2
probability that next time same sound will appear = 1/2
probability that next time same sound will appear = 1/2

probability that same musical sound would be produced 5 times consecutively=

1*1/2 * 1/2 * 1/2 *1/2 = 1/16

so 1 of 16.

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tanu   (12 years ago)

the answer is 1/(2^5) as only 2 musical sounds are made n d same sounds are repeated 5 tyms.....so d probability vil b 1/32.

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sandeep de  (12 years ago)

"sound is repeated 5 times.. read last line" which out of two we don't knw...
now consider any one makes sound. its probability of selection = 1/2
now repeated 5 times: 1/2*1/2*1/2*1/2*1/2= 1/32

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