Search found 46 matches
Probablity
If two cards are drawn from a standard deck without replacement,the problality of drawing a king and then queen is ?
- by romitvsingh
Sat May 26, 2012 12:11 am- Forum: Problem Solving
- Topic: Probablity
- Replies: 1
- Views: 746
The area of curved surface of a cylinder is 264m^2.Its volume is 924m^3. The height of the cylinder must be a 4m b 6m c 8m d none of these The area of the curved surface of a cylinder = 2(pi)rh So, if this area is 264, we can write 2(pi)rh = 264 Divide both sides by 2 to get (pi)rh = 132 The volume...
- by romitvsingh
Tue Mar 27, 2012 10:59 am- Forum: Problem Solving
- Topic: measurement
- Replies: 6
- Views: 1934
Distance speed n time
Ramesh leaves home at 5pm to pick up his daughter from school and returns home at 7 pm. One day the school was over at 5pm and the daughter instead of waiting for her father started walking towards home. Ramesh as usual started from home and met his daughter on the way and returned home 12 minutes e...
- by romitvsingh
Tue Mar 27, 2012 10:49 am- Forum: Problem Solving
- Topic: Distance speed n time
- Replies: 4
- Views: 3296
measurement
The curved surface of a cylinder is 264m^2.Its volume is 924m^3. The height of the cylinder must be
a 4m
b 6m
c 8m
d none of these
- by romitvsingh
Fri Mar 23, 2012 11:09 pm- Forum: Problem Solving
- Topic: measurement
- Replies: 6
- Views: 1934
algebra
the LCM of polynomials (36x^2-49) and (6x^2-25x+21)is
a (x-3)
b (x-3)^2 (6x-7)
c (x-3) (6x-7) (6x+7)
d none of these
- by romitvsingh
Fri Mar 23, 2012 11:06 pm- Forum: Problem Solving
- Topic: algebra
- Replies: 7
- Views: 1307
trigonometry
the sin of angle B is 28/35. the angle measure is therefore sin -1( 28/35 ); angle B is approx 53.1 degree
My question is how do we get the value of angle B as 53.1 degree ?
pls explain in detail
- by romitvsingh
Wed Jan 11, 2012 8:47 pm- Forum: Problem Solving
- Topic: trigonometry
- Replies: 4
- Views: 4110
some basic help on trigonometry
tan 45 degree = x/100
tan 45 degree * 100= x
therefore x= 100 feet , now my question is how do we get the value of x as 100 feet ?
- by romitvsingh
Wed Dec 28, 2011 7:18 am- Forum: Problem Solving
- Topic: some basic help on trigonometry
- Replies: 1
- Views: 1118
arithmetic operations
if n is a positive integer, is the value of b-a at least twice the value of 3^n-2^n?
1) a=2^n+1 and b=3^n+1
2) n=3
- by romitvsingh
Mon Dec 12, 2011 8:09 am- Forum: Data Sufficiency
- Topic: arithmetic operations
- Replies: 4
- Views: 1309
Rate problem
While on a straight road, car X & car Y are travelling at different constant rates. If car X is now 1 mile ahead of car Y, how many minutes from now will car X be 2 miles ahead of car Y? 1) Car X is travelling at 50 miles per hour and car Y is travelling at 40 miles per hour. 2) Three minutes ag...
- by romitvsingh
Mon Dec 05, 2011 11:18 pm- Forum: Data Sufficiency
- Topic: Rate problem
- Replies: 3
- Views: 961
But the ans to the problem is D IN GMAT OG 11th edition pg no 308 que no 68 What is the average (arithmetic mean ) of j and k? 1) the average of j+k and k+4 is 11 2) the average of j,k and 14 is 10 For those who would struggle with the algebra, an alternate approach is to plug in values. Try two cas...
- by romitvsingh
Mon Dec 05, 2011 10:38 pm- Forum: Problem Solving
- Topic: data sufficiency
- Replies: 3
- Views: 1296
- by romitvsingh
Fri Dec 02, 2011 10:22 pm- Forum: Data Sufficiency
- Topic: properties of number
- Replies: 2
- Views: 808
- by romitvsingh
Fri Dec 02, 2011 12:11 am- Forum: Problem Solving
- Topic: percent
- Replies: 4
- Views: 1490
statistics
A report consisting of 2600 words is divided into 23 paragraphs . A 2-papragraph preface is then added to the report. Is the average number of words per paragraph for all 25 paragraphs less than 120? 1) each paragraph of the preface has more than 100 words. 2) each paragraph of the preface has fewer...
- by romitvsingh
Wed Nov 30, 2011 10:39 pm- Forum: GMAT Math
- Topic: statistics
- Replies: 1
- Views: 1450
data sufficiency
What is the average (arithmetic mean ) of j and k?
1) the average of j+k and k+4 is 11
2) the average of j,k and 14 is 10
- by romitvsingh
Wed Nov 30, 2011 5:01 am- Forum: Problem Solving
- Topic: data sufficiency
- Replies: 3
- Views: 1296
probability
A couple decides to have 4 children. If they suceed in having 4 children & each is equally likely to be a boy or a girl, what is the probaility that the will have exactly 2 girls or 2 boys?
A) 3/8
B) 1/4
C) 3/16
D) 1/8
E) 1/16
Pls explain in detail
- by romitvsingh
Mon Nov 28, 2011 8:08 pm- Forum: Problem Solving
- Topic: probability
- Replies: 4
- Views: 1150