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0In a barangay singing competition with 12 contestants, in how many ways can the organizer arrange the first three singers?
1320
How many 4-digit numbers can be
formed from the digits 0, 1, 2, 3, 4 and 5 if the numbers formed are less than 5000?
4x6x6x6 = 864
How many 4-digit numbers can be formed from the digits 2, 3, 4, 6 and 7 if all numbers formed are even
5x5x5x3 = 375
In how many ways can a chairman and a vice-chairman be chosen in a committee composed of 5 students?
5x4 = 20
In how many ways can a true-false test consisting of 9 questions be answered?
29 or 512
If a coin is tossed three times, how any ways can the outcome be one head and two tails?
3 S={(HTT),(THT),(TTH)}
A coin is tossed 4 times, how many possible outcomes will it have?
24 or 16
A computer password consists of 2 lower case letters followed by 3 digits. How passwords are possible if repetitions are not allowed?
26x25x10x9x8 = 468,000
How many 4-digit numbers can be
formed from the digits 0, 1, 2, 3, 4 and 5 without repetitions?
5X5X4X3 = 300
In an election for SSG president, there are 7 female candidates and 5 male candidates. How many ways can a student choose their SSG president?
7+5=12 ways
How many 2-digit numbers can you form using the digits 2,3,4,6,1,0 if the digits are not repeated?
25
How many 4-digit numbers can be
formed from the digits 0, 1, 2, 3, 4 and 5, if the numbers are odd?
5x6x6x3 = 540
In how many ways can a student answer a 5-item true or false exam?
25
How many 2-digit numbers can you form using the digits 2,3,4,6,1,0 if the number formed is odd?
5x2 = 10
A code consists of 3-digits, each of which may be a number from 0 to 9. How many codes can be formed if only the first and the last digits are the same?
10X9X1 = 90