Two balanced dice are rolled. Find the probability that the sum of numbers on two dice is odd.

The probability of getting the number $7$ while throwing a balanced die once is ...........

An integer is chosen between $0$ and $100$. What is the probability that it is
$(i)$ divisible by $7?$
$(ii)$ not divisible by $7?$

One ticket is drawn at random from a bag containing tickets numbered $1$ to $40$. The probability that the selected ticket has a number which is a multiple of $5$ is

If $I$ toss a coin $3$ times and get a head each time,should $I$ expect a tail to have a higher chance in the $4^{th}$ toss? Give a reason in support of your answer.

In a packet containing $400$ screws,$120$ screws are defective. $A$ screw is picked up randomly from the packet. Then,the probability that the screw picked up is non-defective is .........