My experiences with CAT and learning points

Attempting exams like CAT is always a tense experience. To keep our nerves under control is the mantra here. I have attempted CAT two times, first time in 2008 and next time in 2012. First one is traditional paper-based type and next one is computer-based test. See my learning points from this experience...

Puzzle-35 (XAT-2013)

Sara has just joined Facebook. She has 5 friends. Each of her five friends has twenty five friends. It is found that at least two of Sara’s friends are connected with each other. On her birthday, Sara decides to invite her friends and the friends of her friends. How many people did she invite for her birthday party?

(A)  ≥ 105  (B) ≤ 123        (C) < 125        (D) ≥ 100 and ≤ 125 (E) ≥ 105 and ≤ 123

For solution click on 'Read more' below..

XAT-2013 Detailed Solutions (Quantitative Ability)

Along with solutions, here I would like to give 'Notes' especially on some problems where I went in a wrong way or spent a little more time than usual while actually solving in the exam. And also for some problems, I summarized crucial clues and tagged those clues under 'Points'. I thought this approach is quite useful to solve the problems and get to know about the nitty-gritties.

Indian Economy, a CR point

I was reading through a write-up on Indian Economy-2012. I wanted to relate one point from here to the critical reasoning stuff.

The following are the facts found in a recent survey:

Fact-1: Indian economy may be broadly divided in to three sectors- Industry, Agriculture and Services. The contributions of these sectors to the GDP are as follows:

Agriculture-15%, Industry-28%, Services-57%

Fact-2: For over a considerable period, there is exodus observed in a significant extent. People are moving from rural to urban areas. Most of the people who are moving out of rural areas are not finding agriculture as a lucrative sector and trying to find jobs in industries in urban areas.