There are 10 coins. 6 coins showing head. And 4 showing tail. Each coin was randomly flipped (not tossed) seven times successively.after flipping the coins are 5 heads 4 tails one is hided the hided coin will have what.

Printable View

- March 6th 2006, 12:31 AMbharathlecePlz Solve
There are 10 coins. 6 coins showing head. And 4 showing tail. Each coin was randomly flipped (not tossed) seven times successively.after flipping the coins are 5 heads 4 tails one is hided the hided coin will have what.

- March 6th 2006, 06:29 AMCaptainBlackQuote:

Originally Posted by**bharathlece**

probability 0.5. But we must suspect that something else was intended, if so

the intention has been lost somewhere.

RonL - March 6th 2006, 08:23 PMbharathlecei didnt understand ur replay
on which basis ur going to say that head and tail has a probability of 0.5

plz explain in detail. - March 6th 2006, 09:42 PMCaptainBlackQuote:

Originally Posted by**bharathlece**

orientation. So knowledge of the orientation of the other coins tell you nothing

about the orientation of the last coin, and after they have all been flipped

at least once their orientations are unrelated and randomised.

RonL

RonL - March 8th 2006, 09:57 AMRich B.
Hi:

I am inclined to believe this to be a "trick question", its deception being drawn from its ambiguous delivery. At first reading, it seemed (to me) that the coins were gathered up from their initial positions as 6 H and 4T, and reflipped. The trickster, expecting the trickee to assume just that, further expects such assumption to confound his unsuspecting victim. But no mention of a reflip was made. That being the case, the hidden coin is facing heads up.

Regards,

Rich B.