There are 150 coins all are initially heads up, and there are 150 people each person will flip the coin( if head than changes to tail and vice versa) in a manner which is:- 1st person will flip all the coin 2nd person will flip coins numbered 2 4 6 8. .159 3rd person will flip the coin numbered as 369 12... 150 150th person will flip only 150th coin After all this what will be the number of coins with heads up
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Step-by-step explanation:
138 heads out of all 150 coins.
the 1st,4 th,9,16,25,36,49,64,81,100,121,144.. positioned coins will show tail on upper surface.
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