After reading a book for English class, 100 students were asked whether or not they enjoyed it. Nine twenty-fifths of the class
2 answers:
Answer: 64 students
Step-by-step explanation:
Given: Total students in English class= 100
Nine twenty-fifths of the class did not like the book.
⇒ of class did not like the book.
Thus, the number of students did not like the book=
Therefore, the number of students like the book =Total students- students did not like the book
=100-36=64 students.
The number of students like the book =64
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The question is incomplete. The complete question is :
A bulb can either be on or off. A board contains 20 bulbs connected to a randomization circuit that lights up a random sequence every time it is turned on. What is the probability that all the lights will switch on ?
Solution :
It is given that :
There is board connected to = 20 bulbs
And one can either be put ON or put OFF.
Therefore the chance that a bulb is ON =
It is given that every time a bulb turns ON, the board lights up in a random sequence.
Therefore, the probability of all the lights to be switched ON is given by :