Stacey, A minor mistake towards the end... > 300,000 > C > So the costs are at least 300,000. So profit is at most 200,000, but they could be below or above 150,000. Can't tell. Answer is E. C < 300,000 (Your last step assumed the opposite) Profit = 500,000 - 300,000 = 200,000 Profits are 200k in th...

Since std dev = 6 => 1 std dev = 6, 2 std dev = 12.
1 std dev below the mean (which is 21) is 21-6 = 15 hours
2 std dev below the mean = 21 - 12 = 9 hours
Time Pat watched TV is between 9 and 15 hours. 12 is the only answer that falls in this range. Hence D.

> so total is 6! * 7! Samir, Shouldn't that be 7! * 7! ? The first seat you considered for the 1st woman can take 1 of 7 women so 7 * 6! The only configuration in which 7 men and 7 women can be seated around a table so that no two women are seated next to each other is to alternate, as Samir said. M...

Adding to Samir's answer:

> 2). S2=43
>similarly 633 =43 +11x
> i.e 590/11 produces a remainder hence this is not a term

For 2, 633 could be part of the S1, S3, S5... sequence, and since S1 is not specified, 2 is insufficient.

So dogged were Frances Perkins’ investigations of the garment industry, and her lobbying for wage and hour reform was persistent, Alfred E. Smith and Franklin D. Roosevelt recruited Perkins to work within the government, rather than as a social worker. A. and her lobbying for wage and hour reform wa...

One could also use the process of elimination here: (54,820)^2 should have a 0 in the unit's position & (54,822)^2 should end with a 4. The average of these two numbers will have a 2 in the unit's position. That eliminates A, B, C & E (A ends with a 1, B & C end with a .25 and E ends wit...

OG 11th edition, practice question #125

If r & s are positive integers, is r/s an integer? (1) Every factor of s is also a factor of r (2) Every prime factor of s is also a prime factor of r OA is A. I don't get it. Isn't the following possible? Scenario 1: r = 4 = 1*2*2, s = 2 = 1*2; r/s = 4/2 => r/s is an integer Scenario 2: r = 5 =...