Power + multiplication principle - examples
- No. of divisors
How many different divisors has number ??
- Morse alphabet
Calculate how many words of Morse code to create compiling commas and dots in the words of one to four characters.
How many are all subsets of set ??
Event N has probability of 0.24. What is the probability that the event N occurs in 8, 5, 4 try.
- Bits, bytes
Calculate how many different numbers can be encoded in 16-bit binary word?
- Area codes
How many 6 digit area codes are possible if the first number can't be zero?
- Boys and girls
There are eight boys and nine girls in the class. There were six children on the trip from this class. What is the probability that left a) only boys b) just two boys