Q10 of 140 Page 276

(ac and the outcomes are recorded. How many possible outcomes are there?

(b) How many possible outcomes if the coin is tossed.


(i) four times? (ii) five times? (iii) n times?


a) A coin is tossed three times


So possible number of outcomes=23=8


(HHH,HHT,HTH,HTT,THH,THT,TTH,TTT)


b)


i) A coin is tossed four times


So possible number of outcomes=24=16


(HHHH,HHHT,HHTH,HHTT,HTHH,HTHT,HTTH,HTTT,THHH,THHT,THTH,THTT,TTHH,TTHT,TTTH,TTTT)


ii) A coin is tossed n times


So possible number of outcomes=2n


More from this chapter

All 140 →
8

In how many ways can a vowel, a consonant and a digit be chosen out of the 26 letters of the English alphabet and the 10 digits?

 9

How many 8-digit telephone numbers can be constructed using the digits 0 to 9 if each number starts with 270 and n digit appears more than once?

 11

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five different flags are available.

 12

How many 4-letter codes can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?