Q87 (CAPF/2012) Miscellaneous & General Knowledge › Important Days, Places & Events › Important Days, Places & Events

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 T face of all the 10 coins can be brought to be the upper face?

A

4

B

5

C

6

D

7

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