neonshark

Count me in please! :)

Yes, but I did it in more understandable way: p = xy = 10x + y; q = yx = 10y + x; p + q = 10x + y + 10y + x = 11x + 11y = 11 (x + y). Now we can see that the sum of purshases must not be divisible by 11. Then: A) 200 - 79 = 121 - x B) 200 - 90 = 110 - x C) 200 - 113 = 87 - Answer D) 200 - 145 = 55 - x E) 200 - 167 = 33 - x

Sorry, posted to a wrong thread. Find another one in MATH->PS Section. Please delete this one.

Ken withdrew $200 in cash from the bank. Using the cash, he bought a book for exactly p dollars and a hat for exactly q dollars, where p and q are two-digit integers that have the same digits but in reverse order. Assuming no sales tax, each of the following could be the amount of cash, in dollars, that Ken has remaining EXCEPT: (A) 79 (B) 90 © 113 (D) 145 (E) 167 OA will be posted later.

Ken withdrew $200 in cash from the bank. Using the cash, he bought a book for exactly p dollars and a hat for exactly q dollars, where p and q are two-digit integers that have the same digits but in reverse order. Assuming no sales tax, each of the following could be the amount of cash, in dollars, that Ken has remaining EXCEPT: (A) 79 (B) 90 © 113 (D) 145 (E) 167 OA will be posted later.

Thank you!

OA is B. Thank you!

OA is A. But what's wrong with C?

OA is D

What do you mean :) ?

Please provide detailed explanation. Before the Civil War, Harriet Tubman, herself an escaped slave, returned again and again to Maryland to guide other slaves along the Underground Railroad to freedom. (A) herself an escaped slave, returned again and again to Maryland to guide (B) being an escaped slave herself, returned again and again to Maryland so as to guide © an escaped slave herself, returned again and again to Maryland for guiding (D) herself as an escaped slave, returned again and again to Maryland so as to be the guide of (E) who had been herself as an escaped slave, returned again and again to Maryland for the guiding of

I think this is the kind of sophisticated comparing. Because the Earth’s crust is more solid there and thus better able to transmit shock waves, an earthquake of a given magnitude typically devastates an area 100 times greater in the eastern United States than it does in the West. (A) of a given magnitude typically devastates an area 100 times greater in the eastern United States than it does in the West (B) of a given magnitude will typically devastate 100 times the area if it occurs in the eastern United States instead of the West © will typically devastate 100 times the area in the eastern United States than one of the comparable magnitude occurring in the West (D) in the eastern United States will typically devastate an area 100 times greater than will a quake of comparable magnitude occurring in the West (E) that occurs in the eastern United States will typically devastate 100 times more area than if it occurred with comparable magnitude in the West

Please provide comprehensive explanation. Because of the enormous research and development expenditures required to survive in the electronics industry, an industry marked by rapid innovation and volatile demand, such firms tend to be very large. (A) to survive (B) of firms to survive © for surviving (D) for survival (E) for firms’ survival

OA is A. Thank you!

OA is E. Thank you!