Question

in a class of 50 students, 70% were passed what is the probaility of failed students​

Answer 1

Answer:

Step-by-step explanation:

70% passed means rest 30% failed

so no. of failed students= 30% of 50=(30/100)×50=15

so,probability of failed students=no. of failed students/total no. of students

so P=15/50=3/10

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Answer 2

Answer:

15 students failed

Step-by-step explanation:

No. of student passed = 50*70/100 = 35

No. of student failing   = total no. of student - no. of passed.

=>50-35=15

∴ 15 students failed

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