In an examination a candidate is required to pass in 4 different subjects in how many ways he can fail
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Answered by
34
No. of ways in which one can pass or fail in the examination = 2 to the power 4=16
To pass one has to pass in all the subjects.= 1 way
∴ The no. of ways in which one can fail = 16-1=15 ways.
mnageswarraodop7d9j0:
answer for you
No. of ways in which one can pass or fail in the examination = 24=16
To pass one has to pass in all the subjects.= 1 way
∴ The no. of ways in which one can fail = 16-1=15 ways.
To pass one has to pass in all the subjects.= 1 way
∴ The no. of ways in which one can fail = 16-1=15 ways.
Answered by
22
The no. of ways a student can fail the exam is equal to 15.
If the no. Of exams are equal to 4 , then a student has to pass in all the exams to pass .
No. Of ways a student can fail = fails in one subject + fail in 2 subjects + fail in three subjects + fail in 4 subjects
=> 4!/3! + 4!/2!2! +4!/3! + 1
=> 4+6+4+1
=>15
The no. Of ways a student can fail = 15
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