Given:vinay1983 wrote:The question is from OG 13. Again what is the frequency of such questions on the GMAT?
OA: B
1/3 of the decimals in T have a tenths digit that is even.
So 10 of the decimals in T are rounded up and 20 of the decimals in T are rounded down.
E - S = 10*(0.2 to 0.8) + 20*(-0.1 to -0.9)
Let's look at the extremes (max positive - min negative) and (min positive - max negative):
2 - 18 = -16
8 - 2 = 6
So the values lie between 6 and -16, inclusive.
Choose B
This is a tough problem.
Unless you're doing really doing well in the quant section, the frequency of occurrence of such questions will be less.
Cheers


















