$A$ balanced die is thrown. Find the probability that the number on the die is a multiple of $3$.

There are $5$ white,$7$ red,$4$ black,and $2$ blue identical balls in a box. One ball is selected at random from the box. Find the probability that the selected ball is either white or blue.

When a balanced die is rolled,the probability of getting a number greater than $4$ on it is ..........

$A$ lot consists of $48$ mobile phones of which $42$ are good,$3$ have only minor defects,and $3$ have major defects. Varnika will buy a phone if it is good,but the trader will only buy a mobile if it has no major defect. One phone is selected at random from the lot. What is the probability that it is
$(i)$ acceptable to Varnika?
$(ii)$ acceptable to the trader?

An unbiased coin is tossed thrice. The probability of receiving more heads than tails is ........

Two balanced dice are rolled simultaneously. Then,the probability that the numbers appearing on both the dice are different is ........