GRE
The units digit of $$3n$$
The units digit of $$n^{3}$$
The standard deviation of the 30 ratingss
17
$$k$$
$$10$$
$$\frac{1}{3}$$(PR)
PS
$$\frac{1}{x}$$+$$\frac{2}{x}$$+ $$\frac{3}{x}$$
x +$$\frac{x}{2}$$+ $$\frac{x}{3}$$
$$x$$
$$90$$
The probability that the value of one randomly chosen integer from the set will be greater than 7
$$\frac{1}{2}$$
The number of positive factors of 97
The number of positive factors of 87
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