Latest UPSC Aptitude Question SOLUTION: 10 identical coins are lying on a table having head 'H' face as the upper face. In one attempt, exactly four coins can be turned upside down. What is the minimum total number

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(#M40029159) UPSC question CAPF 2012 Keep an EYE

10 identical coins are lying on a table
having head 'H' face as the upper
face. In one attempt, exactly four
coins can be turned upside down.
What is the minimum total number
of attempts in which tail yr face of
all the 10 coins can be brought to
be the upper face?
(a) 4
(b) 5
(c) 6
(d) 7

Asked In UPSC Rats (11 years ago)

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