Search found 23 matches
Hi Brent,
the answer is given as first option
i.e
-2 power n = (-2) power -n
solution says in this scenario, both sides are not equal even when n = 0 because,
-2 power n = -1 * 2 power 0 = -1 * 1 = -1
(-2) power -n = (-2) power 0 = 1
- by Inspired
Fri Jan 22, 2010 2:19 pm- Forum: Problem Solving
- Topic: PS Q..pls ans with explanation
- Replies: 6
- Views: 1644
PS Q..pls ans with explanation
Each of the following equations has at least one solution EXCEPT
–2n = (–2)-n
2-n = (–2)n
2n = (–2)-n
(–2)n = –2n
(–2)-n = –2-n
- by Inspired
Fri Jan 22, 2010 11:05 am- Forum: Problem Solving
- Topic: PS Q..pls ans with explanation
- Replies: 6
- Views: 1644
DS Q4
23) A person buys a share for $ 50 and sells it for $ 52 after a year. What is the total profit made by him from the share?
(I) A company pays annual dividend
(II) The rate of dividend is 25%
- by Inspired
Tue Jan 19, 2010 6:55 am- Forum: Data Sufficiency
- Topic: DS Q4
- Replies: 5
- Views: 2205
- by Inspired
Tue Jan 19, 2010 5:45 am- Forum: Data Sufficiency
- Topic: DS q3..pls answer
- Replies: 7
- Views: 1617
- by Inspired
Tue Jan 19, 2010 4:58 am- Forum: Data Sufficiency
- Topic: DS q3..pls answer
- Replies: 7
- Views: 1617
DS Q2
If Carlos, Eric, Jeff, and Nigel together have a total of 100 guitars, and each guitar has only one owner, then Nigel has how many more guitars than Eric does? (1) Carlos has two more guitars than Jeff does: Eric has twelve fewer guitars than Jeff does. (2) If Nigel had three times as many guitars a...
- by Inspired
Tue Jan 19, 2010 3:35 am- Forum: Data Sufficiency
- Topic: DS Q2
- Replies: 6
- Views: 2099
- by Inspired
Tue Jan 19, 2010 3:31 am- Forum: Problem Solving
- Topic: what is the ans and why?
- Replies: 2
- Views: 1226
DS Q
Two water tanks, X and Y, were drained simultaneously. If X contained 30 more gallons of water than Y, and both tanks became empty at the same time, how long did it take the tanks to empty? (1) For every gallon drained from tank Y, 2 gallons were drained from tank X. (2)Tank Y was drained at a const...
- by Inspired
Tue Jan 19, 2010 2:27 am- Forum: Data Sufficiency
- Topic: DS Q
- Replies: 6
- Views: 1734
answer please
If x and y are positive odd integers, which
of the following statements could be false?
I. x^y is an odd integer.
II. x^y + x^y is an odd integer.
III. y/x is not an integer.
I only
II only
I and III only
II and III only
I, II, and III
- by Inspired
Tue Jan 19, 2010 2:08 am- Forum: Problem Solving
- Topic: answer please
- Replies: 6
- Views: 1540
what is the ans and why?
A salesman sells two equally priced brands of ice cream, for which he receives a sales commission of 5 percent on one brand and 7 percent on the other. If the salesman sold a total of $10,000 in ice cream and collected $660 in commissions, what fractional part of the total ice cream sold did he sell...
- by Inspired
Tue Jan 19, 2010 1:51 am- Forum: Problem Solving
- Topic: what is the ans and why?
- Replies: 2
- Views: 1226
Inspired wrote:ABCDE is a regular pentagon with F at its center. How many different triangles can be formed by joining 3 of the points A, B, C, D, E and F?
10
15
20
25
pls ans with explanation
sorry, got the ans, such a simple Q.didnt read properly before
- by Inspired
Tue Jan 19, 2010 1:26 am- Forum: Problem Solving
- Topic: pls ans
- Replies: 2
- Views: 1038
pls ans
ABCDE is a regular pentagon with F at its center. How many different triangles can be formed by joining 3 of the points A, B, C, D, E and F?
10
15
20
25
pls ans with explanation
- by Inspired
Tue Jan 19, 2010 1:23 am- Forum: Problem Solving
- Topic: pls ans
- Replies: 2
- Views: 1038
- by Inspired
Mon Jan 18, 2010 11:49 pm- Forum: Problem Solving
- Topic: math Q..pls answer
- Replies: 2
- Views: 1051
math Q..pls answer
Out of seven models, all of different heights, five models will be chosen to pose for a photograph. If the five models are to stand in a line from shortest to tallest, and the fourth-tallest and sixth-tallest models cannot be adjacent, how many different arrangements of five models are possible? 6 1...
- by Inspired
Mon Jan 18, 2010 12:27 pm- Forum: Problem Solving
- Topic: math Q..pls answer
- Replies: 2
- Views: 1051
Hi Kevin,
Can you please explain on the step
1999 rent higher than 1997 rent if and only if (1 +x/100)(1 - y/100) > 1
How did u arrive at (1 +x/100)(1 - y/100) is 'greater than 1'
I am not able to understand.
Thank you.
sorry...got it...
- by Inspired
Thu Jan 14, 2010 12:53 pm- Forum: Data Sufficiency
- Topic: Annual Rent
- Replies: 7
- Views: 3230