A student used the proportion `(n)/(100)=(5)/(32)` to find 5% of 32. What did the student do wrong?

Find (5)/(8) of 32.

What's the error? A student said that (3^(5))/(9^(5)) is the same as 1/3 . What mistake has the student made?

What’s the Error? A student said that the ratios 3/4 and 9/16 were proportional. What error did the student make?

The proportion of students in three classes is 3 : 4 : 5 . If the number of students is increased by 20 in each class, then the proportion changes to 4 : 5 : 6 . What is the initial number of students in the three classes taken together ?

In a school there are 1800 students. Last day except 4% of the boys all the students were present in the school. Today except 5% of the girls all the students are present in the school, but in both the days no. of students present in the school, were same. The no. of girls in the school is :

In a class of 60 students 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NS. If one of these students is selected at random, find the probability that: i. The student opted for NCC or NSS ii. The student has opted NSS or NCC.

In a school only, 3 out of 5 students can participate in a competition. What is the probability of the students who do not make it to the competition?