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An unbiased coin is tossed six times in a row and four different such trials are conducted. One trial implies six tosses of the coin. If H stands for head ans T stands for tail, the following are the observations from the four trials.

  1. HTHTHT
  2. TTHHHT
  3. HTTHHT
  4. HHHT_ _

Which statement describing the last two coin tosses of the fourth trial has the highest probability of being correct?

  1. Two T will occur.
  2. One H and one T will occur.
  3. Two H will occur.
  4. One H wll be followed by one T.
in General Aptitude by (21.2k points) 4 49 137
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Last two tosses can be HH, HT ,TH ,TT

  1. P(TT)=1/4
  2. P(HT)+P(TH)=½
  3. P(HH)=¼
  4. P(HT)= 1/4

Hence option B)  is correct

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