Ten coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?

A.

210

B.

29

C.

3×28

D.

None of these

• Total possible outcomes is 2^10
  
  In half the outcomes, the third coin will be tails (in the other half it will be heads).
  
  (2^10)/2 = 2^9
  
  This is also the number of outcomes where the third coin will come up heads.
• 9 years agoHelpfull: Yes(0) No(1)