Please help !
A random sample of 1,500 couples was asked the question, "How many children presently reside in your household?"

Number of Children Frequency
0 325
1 212
2 660
3 151
4 68
5 or more 84

What number of children occurred the least frequently? Calculate this percent.
A) 0, 21.67%
B) 0, 11.75%
C) 5 or more, 5.6%
D) 4, 4.53%

Tom says that he needs 6 rolls to obtain each possible outcome on a 6-sided die. on the fourth roll, he rolls his second "3”. tom says that the die is loaded and that each outcome is not equally likely. is tom correct here? if you think tom is incorrect, how many rolls should tom make until he sees each number occurring about 1/6 of the time?