1 - Fill the space blanks If we make a sequence selecting three elements from three different elements
{1, 2, 3} and we permit overlapped elements for the sequence, then the total
number of sequences is [ ] . If we do not take into account the order, the total
number of the selections is [ ] .

I'm totally lost in this, what is overlapped elements? This is about what math content? And what is the answer? Please i need help.

Which value is not a solution of 8x^3 – 1 = 0

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.