Search found 9 matches
I did not get How come triangles PQS & QRS are similar?Neo Anderson wrote:from similarity of triangles PQS & QRS
we get QS / 25 = 4 / QS
thus QS^2 = 100 => QS = 10
Area of triangle PQR = 1/2* QS* PR = 1/2*10*(25+4) = 290/2= 145 hence B.
- by spider
Sun Apr 15, 2012 8:44 pm- Forum: Problem Solving
- Topic: Kaplan: Similar right angle Triangles
- Replies: 5
- Views: 1978
Sir, May I write the statements like? 1. 1/x > -1 to a. x < -1 as If 1/a > 1/b then a < b if a, b not equal to o. b. x > 1; simply changing the sign. 2. 1/x^5 > 1/x^3 to a. x^5 < x^3 and can i bring it to x^2 < 1 or 1/x^2 >1? Let me be the first user to thank you - I did it accidentally ;) 1/a > 1/...
- by spider
Sun Apr 15, 2012 8:42 pm- Forum: Data Sufficiency
- Topic: Inequality question
- Replies: 6
- Views: 1338
Is x greater than 1? (1) 1/{x} > -1 (2) 1/{x^5} > 1/{x^3} The CRITICAL POINTS of each inequality are where the left-hand side is equal to the right-hand side or where the inequality is undefined. To determine the ranges of x that satisfy each inequality, test one value to the left and right of each...
- by spider
Sun Apr 15, 2012 5:45 am- Forum: Data Sufficiency
- Topic: Inequality question
- Replies: 6
- Views: 1338
An annually conducted, nationwide survey
An annually conducted, nationwide survey shows a continuing marked decline in the use of illegal drugs by high school seniors over the last three years. Which of the following, if true, would provide most support for concluding from the survey results described above that the use of illegal drugs by...
- by spider
Sat Apr 14, 2012 4:32 am- Forum: Critical Reasoning
- Topic: An annually conducted, nationwide survey
- Replies: 6
- Views: 1871
- by spider
Sat Apr 14, 2012 4:29 am- Forum: GMAT Essays (AWA)
- Topic: Argument essay template, if anyone wants it
- Replies: 114
- Views: 459288
What is the minimum value of (ab+ac+ad+bc+bd+cd)? If abcd = 16. A.51 B.26 C.12 D.24 E.49 -------------------------------------- Hit & Trial Method... simply take a=b=c=d => This gives a=b=c=d = 2 each. Now put a=b=c=d = 2 in (ab+ac+ad+bc+bd+cd); we get (ab+ac+ad+bc+bd+cd) as 24. You may try wit...
- by spider
Thu Apr 12, 2012 4:29 am- Forum: Problem Solving
- Topic: Cheeky approach to few tricky problems-3
- Replies: 4
- Views: 1272
thank you sir!Jim@StratusPrep wrote:If a is less than 2 then a - 3 < 1 or |a-3| > 1
But why I is not true too? Thanks in advance.
- by spider
Thu Apr 12, 2012 4:22 am- Forum: Problem Solving
- Topic: Inequalities with Absolute value
- Replies: 3
- Views: 1214
OG12 Vs OG13
Hi,
I have oG 12 book. should i buy og 13 too? makes sense to do it?
[Moderator Edit: Moved the post to a relevant forum - neelgandham]
- by spider
Wed Apr 11, 2012 5:10 am- Forum: GMAT Strategy
- Topic: OG12 Vs OG13
- Replies: 2
- Views: 2397
sum a1+a2+a3...+an
XCan anyone help me with this sum.
If each term in the sum a1+a2+a3...+an is either 7 or 77 and the sum is 350, which of the following could be n?
a)38
b)39
c)40
d)41
e)42
- by spider
Tue Apr 10, 2012 12:26 am- Forum: Problem Solving
- Topic: sum a1+a2+a3...+an
- Replies: 3
- Views: 1651