shahfahad wrote:A bar over a sequence of digits in a decimal indicates that the sequence repeats indefinitely. What is the value of (10^4 - 10^2) (0.0012)?
Note: There is a bar over "12" in 0.0012. Couldn't figure out how to insert it.
(A) 0
(B) 0.12 (with the bar on 12)
(C) 1.2
(D) 10
(E) 12
The repeating digits beyond the bar represent values that are EXTREMELY SMALL relative to the other values.
Thus, we can safely ignore the repeating digits beyond the bar.
(10� - 10²)(.0012)
= (10²)(10² - 1)(12/(10�)
≈ (10²)(10²)(12/10�)
= 12.
The correct answer is
E.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at
[email protected].
Student Review #1
Student Review #2
Student Review #3
