More Quant

Question 1

If there are 8 teams and each team plays each other exactly once, how many games were played?

Answer 1

8C2

Question 2

x rounded to the nearest 10 digits is 290. what is the range of x

Answer 2

Between 285 and 295

Question 3

y rounded to the nearest single digit is 12, what is the range of y

Answer 3

11.5 to 12.5

Question 4

DS: if x + y = 10, is x>y

simplify

Answer 4

is x > 10 - x

is x > 5

Question 5

What is a common factor of (20)! + 17?

15
17
19

Answer 5

17.

17 is not divisible by 15 or 19

Question 6

mn /= 0

3 sec

Answer 6

neither m nor n = 0

Question 7

37.5% of 8

Answer 7

(3/8) * 8 = 3

Question 8

what is the sum of all of the even integers between 99 and 301?

Answer 8

Sum = Average * N

Average = (100+300)/2 = 200
N = [(300 - 100)/2] + 1 = 101

= 20200

Question 9

unemployment rate dropped from 16% to 9%

meanwhile, the number of workers increased 20%.

What was the approximate change in the % of unemployed workers?

Answer 9

of unemployed workers in a given period = unemployment rate * number of workers

((u2 - u1)/u1) * 100 %

u2 = (1.2)(N)(0.09)
u = (N)(0.16)