$A$ letter of English alphabets is chosen at random. Determine the probability that the letter is a consonant.

$A$ balanced die is rolled twice. Then,the probability that the sum of numbers received in two trials is $12$ or less than $12$ is ...........

Total number of outcomes in the experiment of throwing a balanced die twice is ..........

Two balanced dice are rolled simultaneously. Then,the probability that the sum of numbers on the dice is $12$ is ........

$A$ girl calculates that the probability of her winning the first prize in a lottery is $0.08$. If $6000$ tickets are sold,how many tickets has she bought?

$A$ school has five houses $A, B, C, D$ and $E$. $A$ class has $23$ students: $4$ from house $A$,$8$ from house $B$,$5$ from house $C$,$2$ from house $D$,and the rest from house $E$. $A$ single student is selected at random to be the class monitor. The probability that the selected student is not from house $A, B$,or $C$ is: (in $/23$)