Draw one disc at random

Max has a box which contains 100 discs. The discs are numbered from 1 to 100.

Max draws one disc at random from the box.

What is the probability that it not having perfect square number marked on disc.

Click answer

Blood donate camp

The blood donate camp was set there. Before that the doctors checked blood groups of 500 people.

If a person from this group selected at random, what is the probability that this person has group O positive?

They got the report as follows: Click answer

Probability of getting tail

A coin is tossed 100 times. Frequency of head=54.

What is the probability of getting tail?

Click answer

Present on a given day

The record of an attendance in the class shows that out of the past 350 consecutive days,

all students were present on 175 days.
(i) What is the probability that on a given day all students were present?
(ii) What is the probability that some of the students were not present on a given day?

Click answer

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