Bonus QUestion 28.07.09
Suppose K be the number of integers n such that (2^n+1)/n^2 is also an integer.
Then K is
a) 0 b) 1 c) 2 d) 3 e) none of these
Ultimate Quant Marathon Blog For IIM CAT
For All Your Quant Queries
Subscribe Options
Verbal
- Para Jumbles 19.08.09
- Fill In the blanks 08.08.09
- Fill In The Blanks 05.08.09
- Para Jumbles 05.08.09
- Para Jumbles 04.08.09
Categories
- Algebra
- Announcements
- Arithmetic
- CAT 2008
- CAT 2009
- Combinatorics
- concepts
- Conundrum
- Coordinate Geometry
- Data Sufficiency
- Functions
- General
- Geometry
- IIM Interview Experiences
- Inequalities
- Mock Cat
- Mock Quant
- Number Thoery
- Online CAT
- Power Play
- Prime Numbers
- Probability
- Problem of the week
- Problems
- Tips
Recent Posts
- Problem of the day 26.08.09
- Problem of The day 06.08.09
- Problem of the Day 30.07.09
- Bonus QUestion 28.07.09
- Problem of the day 28.07.09
Blogroll
- Art of Problem Solving
- CAT Material (free)
- Math Lessons
- Pagal Guy
- Pagalbille
- Test Funda
- Verbal Logic
concepts
Problems
Top Posts
- Concept 4 Prime Numbers
- Gejo's Way Of Approaching The Quants Section
- Concept 1 Perfect Squares
- Mini Concept: Multinomial Theorem
- Problem Of The Week 48
Recent Comments
| gaurav on Problem Of the Day 26.07.… | |
| praveen on Problem of the day 26.08.… | |
| SHASHWAT SHARMA on IIM L Interview Experienc… | |
| ujjawal kumar on Concept 4 Prime Numbers | |
| Suja on Problem Of The Week 19 |
Blog Stats
- 78,275 hits
Online Users
Archives
My Twitter!
- I liked a @YouTube video youtu.be/RFfiHwvd7zM?a Khudaaya Full Song | Shanghai | Emraan Hashmi, Abhay Deol, Kalk 20 hours ago
- Beautiful Song (@YouTube youtu.be/RFfiHwvd7zM?a) 20 hours ago
- I liked a @YouTube video youtu.be/jsY8Nfi5Hik?a Khudaaya Song | Shanghai | Emraan Hashmi, Abhay Deol, Kalki Koe 6 days ago
- I liked a @YouTube video youtu.be/8FMz_KT1mC4?a Duaa Shanghai Full Song | Emraan hashmi, Abhay Deol, Kalki Koec 6 days ago
is it 1
Haritosh
July 28, 2009 at 5:59 pm
Only two integer values of n 1 and 3 are the solutions…
Ans option c….
Vishal
July 28, 2009 at 8:22 pm
answer option C is right
Rahul
July 29, 2009 at 7:42 am
i think its e….we can have any no. of n which even.
ANKIT PANGHAL
August 10, 2009 at 10:16 am
only 1 nd 3 so c
kuldeep
July 29, 2009 at 4:19 pm
oohh sory i got the qyestion wrong…i thought it is
(2^n+1)^n/2
ANKIT PANGHAL
August 10, 2009 at 10:18 am
Clearly n = 1 and n = 3 satisfies the condition but now we have to prove that 2^n + 1 will never be a factor of n*n for n >3.
I am clueless here ??
Balboa
August 28, 2009 at 10:18 am
What about n=9
Ravi
December 1, 2009 at 6:17 pm
hi guys..i know its out of place but i din’t know where to post it..so i m writing it here..i have a question on probability..it goes as..
please help me solve it..n if its not the right place to ask it..tell me where should i post it..
There are 5 fruits -Banana,Apple,Orange,Pear and Mango-which are to be served among six boys.If no fruit can be served to more than one boy,find the probability that all the five fruits were served to exactly three boys such that each of the three boys gets at least one fruit.
answer choices–
1. 5/8
2. 25/54
3. 55/108
4. 175/324
5. 125/324
goodwill2
December 27, 2009 at 3:46 pm
i posted the previous question..can somebody tell me where to post it
goodwill2
December 28, 2009 at 4:19 pm