only 2 sounds......... A toy train can make 10 sounds sound changes aftr every 4
min.................
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now train is defective and can make........
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find probability that same sound is repeated 3 times consecutively(1 OUT OF
__)?

• two sound i.e.p=1/2
  one sound 3 tmes i.e. p=(1/2*1/2*1/2)+(1/2*1/2*1/2)=1/4
• 13 years agoHelpfull: Yes(13) No(4)
• 2 sounds hence p=1/2
  consecutive 3 times = (1/2)*(1/2)*(1/2)
  = 1/8 (1 out of 8)
• 13 years agoHelpfull: Yes(5) No(5)