an unbaised coin is tossed until it shows up the same face in 2 consicative throws wat is the probability that the no of tosses is not more than 4.1)3/4 2)1/4 3)7/8 4)1/8

• using 0 and 1 for head and tail respectively and considering binary system , we find that
  
  Out of 16 possibilities, 14 are desired options.
  
  Then probability = 14/16=7/8
• 13 years agoHelpfull: Yes(2) No(0)
• 1/2 + 1/4 + 1/8 = 7/8
• 13 years agoHelpfull: Yes(2) No(0)