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If n has 15 positive divisors, inclusive of 1 and n, then
If n has 15 positive divisors, inclusive of 1 and n, then which of the following could be the number of divisors of 3n?
I. 20
II. 30
III. 40
A. II only
B. I and II only
C. I and III only
D. II and III only
E. I, II and III only
OAB
- by [email protected]
Sun Jun 16, 2013 7:27 pm- Forum: Problem Solving
- Topic: If n has 15 positive divisors, inclusive of 1 and n, then
- Replies: 2
- Views: 1818
It is definitely between B and E. Lets check E: (E) implying an analogy between the critics’ opposition to the artificial kidney implant and their opposition to the early heart transplants Argument has not mentioned that heart transplant had critiques but states that the transplant technique is la...
- by [email protected]
Sun Jun 16, 2013 9:30 am- Forum: Critical Reasoning
- Topic: artificial kidney implant: Reasoning
- Replies: 2
- Views: 1607
If the integers a and n are greater than 1 and the product of the first 8 positive integers is a multiple of a^n, what is the value of a? 1. a^n = 64 2. n = 6 Is the integer n odd? (1) n is divisible by 3 (2) 2n is divisible by twice as many positive integers as n Here is my two cents for the secon...
- by [email protected]
Tue May 21, 2013 1:02 am- Forum: Data Sufficiency
- Topic: GMAT PREP Ques - Need expert advice
- Replies: 3
- Views: 1159
Is (|x|)^x > x(|x|)^3? (1) x2 + 4x + 4 = 0 (2) x < 0 OA is d I know 1 is suff but how is 2 suff? Plugging numbers is quiet fast here.. Statement 2: -1, -2,-3 and so on When X=-1 1^-1>-1 * 1^3 ie 1/1> -1 (yes) When x=-2 2^-2> -2* 2^3 ie 1/4> -16 ie positive> negative same as in x=-1...(Yes) this is ...
- by [email protected]
Sun May 19, 2013 1:09 am- Forum: Data Sufficiency
- Topic: absolute value of x to power x
- Replies: 2
- Views: 1015
A recent study has found that within the past few years, many doctors had elected early retirement rather than face the threats of lawsuits and the rising costs of malpractice insurance. (A) had elected early retirement rather than face (B) had elected early retirement instead of facing (C) have el...
- by [email protected]
Sat May 18, 2013 5:34 am- Forum: Sentence Correction
- Topic: someone plz explain the diff b/w RATHER THAN and INSTEAD OF
- Replies: 12
- Views: 3699
- by [email protected]
Sat May 11, 2013 9:36 pm- Forum: Data Sufficiency
- Topic: x is a positive multiple of y
- Replies: 2
- Views: 1423
A sum of $3310 is to be paid back in 3 equal installments.
A sum of $3310 is to be paid back in 3 equal installments. How much is each installment if the interest is compounded annually at 10% per annum.
A. 1311
B. 1331
C. 1103
D. 2331
E. 2311
OA B
- by [email protected]
Mon Apr 22, 2013 9:23 pm- Forum: Problem Solving
- Topic: A sum of $3310 is to be paid back in 3 equal installments.
- Replies: 2
- Views: 2862
Considering all of the scientists who have been awarded the Nobel Prize, perhaps none is more lauded as the chemist Mendel, who pioneered the study of several new elements and paved the way for some of the great discoveries of the modern era. A. perhaps none is more lauded as B. perhaps none was mor...
- by [email protected]
Wed Apr 17, 2013 7:51 am- Forum: Sentence Correction
- Topic: Nobel Prize
- Replies: 6
- Views: 1458