Ravi gives an MCQ test by guessing the answers. Find the probability that he gets all $3$ questions correct, if each question had four options and only one correct answer.

The probability of picking a consonant from the English alphabet is _____.

How many elements are there in the sample space of an experiment when three dice are rolled simultaneously?

There are $4$ cups with a marble in one of them. Find the probability of guessing the right one in one try.

Choose the correct option:

The numbers $2, 3$ and $4$ repeat as many times as their value. The mode and median of the observations are _____ .

One $\mathrm{cm}$ on scale of a bar graph represents $5 \mathrm{ft}$. Find the actual height of the building if this is represented by a bar of $4 \mathrm{cm}$ height in the bar graph.

Find the arithmetic mean of $4,8$ and $12$.

Find the median of $13,3,9$ and $7$.

The median of observations $11, 12, 14, 18, y+2, 20, 22, 25$ and $61$ arranged in the ascending order is $21$. Find the value of $y$.