When a certain tree was first planted,it was 4 ft tall. each year the height increased by a constant amount. at the end of the 6th year, the tree was 1/5 taller than it was at the end of 4th year. by how many feet did the height of the tree increase each year?
assuming k as the constant increase..doesnt it lead to 4+5k = 1/5(4+3k) + (4+3k) ?
Hi Madhav, thought of clearing your confusion. Answer is indeed B.
Is the positive integer r an even prime number?
(1) r is a prime number
(2) 3 < r < 26
In this question, with the FS 1, it says r is a prime no. There are many prime nos and only 1 is even among all. i.e 2. So the FS1 is does not justify it. i.e when you say, 2, it is an even prime no. Justifies. When you say, 3, it is an odd prime no. Does not Justify. Here the answer becomes inconsistent. i.e first we get Yes for even for 1 prime and No for odd for other primes. Hence info is inconsistent. That eliminates A & D.
FS2 says, 3
<26. Remember that we are asked to find out whether there are any EVEN PRIME NUMBERS between 3 & 26. We are not asked to PROVE whether there is indeed any EVEN PRIME NO.
Take 5, it is odd prime no and it's not even.
Take 7, it is odd prime no and not even.
Take 11, odd and not even.
.Take 23, odd and not even.
Here we are getting all the answers as NO. So the data is sufficient.
Hence the answer is B and not C.
Always remember in GMAT DS Q's, they don't ask us to PROVE the statement, rather they ask us to find out.
Hope this analysis helps.
The answer to this whether r is even prime or not is B. We are asked not to prove whether "r" is even or not rather we have to find out "r" is actually prime or not. Fact Statement 2 says 3
<26 i.e there are no even primes between 3 and 26. Hence, the answer to this is B and not C.
Do quote on this.
Inputs are appreciated
Last month 15 homes were sold in town X. The average sale price of teh homes was $ 150,000 and the median sales price was $130,000. Which of the following must be true?
I. At least one of the homes was sold for more than $165,000
II._____________________________ more than $130,000 and less than $150,000.
III. _____________________________ less than $130,000.
C. III only
D. I and II
E. I and III
ankitgarg20 SaysI beg to differ from you...according to "MGMAT", different from and differ from,both are correct usages. Untill of course, you didnt mean Manhattan GMAT by saying MGMAT
ashishjha100 Says'Different from' is the correct usage not 'Different that'.......
ankitgarg20 SaysOption E also compares the two things correctly. Why is "different" usage is correct and "differs from" is wrong?