Search found 5 matches
quite easy...
half of the shaded region=area of quarter circle-half area of sq=Pi*1/4-1/2
total shaded region=2(pi/4-1/2)=pi/2-1=TT/2-1...ans option 4....any doubt?
- by kuntalkkc
Mon May 17, 2010 11:48 am- Forum: Problem Solving
- Topic: 112) What is the area of the shaded region
- Replies: 5
- Views: 1419
OA has to be 0 buddy.. Logical explanation: let say all 30 students are a1,a2,a3,...,a30 now a1,a2,a3,...a15 got the recommendation from the 1st prof. now 2nd prof gives that to 17 student.so take a16,a17,....,a30 which will give u 15 and let say to a1,a2..so total 17. till now a1,a2 gets both reco ...
- by kuntalkkc
Sun May 16, 2010 8:52 am- Forum: Problem Solving
- Topic: 38) Calculate least number of recommendations
- Replies: 5
- Views: 1239
Good qn... well take the last and firat,2nd last and 2nd 1st.... =(1/11+1/20)+(1/12+1/19)+...+(1/15+1/16) now see the symmetry 20+11=12+19=..=15+16=31 so, =31(1/11.20+1/12.19+1/13.18+...+1/15.16) now again see a good pattern..an increasing AP with decreasing cd like: 11.20=220 12.19=228 13.18=234 14...
- by kuntalkkc
Sun May 16, 2010 8:30 am- Forum: Problem Solving
- Topic: 16) Find X
- Replies: 7
- Views: 2025
It is clearly mentioned in the question that "sqrt of numbers are positive", now as it is true that, sqrt(a)=sqrt(c)+sqrt(d)+sqrt(d)+m where m is a +ve quantity>0 now worst case scenario is sqrt(d)=0,please note it cant be negetive as per question says. so,for this worst case also,sqrt(a)=...
- by kuntalkkc
Tue May 11, 2010 7:47 pm- Forum: Data Sufficiency
- Topic: Tough DS
- Replies: 5
- Views: 1376
Nothing tough....no need to know whether a,b,c,d,e positive or not.cant be negetive thats for sure coz imaginary is not to be considered here to bring argund plane. but a,b,c,d,e can be 0 or not thts not given...Fine. take the statement 1: c=d..cant conclude that much because those quantities can be...
- by kuntalkkc
Sun May 09, 2010 2:21 pm- Forum: Data Sufficiency
- Topic: Tough DS
- Replies: 5
- Views: 1376