How to solve Logical Reasoning questions using Venn Diagrams

The question is as follows:-

All Doctors are Physicians. All Physicians are graduates. All pediatricians are doctors. All actors are graduates.

Conclusions:-
I. Some physicians are actors.
II. Some doctors are actors.
III. All pediatricians are graduates.
IV. All doctors are graduates.

1) All follow
2) Only III and IV follow
3) Only II,III and IV follow
4) Only I,III and IV follow
5) Only I and II follow

Ans)
Now to solve these type of questions, you must always draw Venn diagrams according to the statements given. In our case the venn diagram wud be as depicted:-



Now it is not given the actors are alos some other thing than being graduates. So we have not shown the intersection of Actors' circle with other cirlces. From the Venn diagram it is evident that we can surely say that III and IV follow. Regarding I and II they might be true or false. We cant say about I and II with surety.

So mark option 2.

How to tackle DI problems which are calculation intensive

Like Sunil Gavaskar once said, the best way to play fast bowlers is to stay at the non striker's end..Likewise in CET, the best way to tackle DI problems is to leave them...(This shoud be the case if your attempts are below 160)...

If you are able to attempt 170+ questions, then you should solve DI problems....Posting some tricks for those ppl....

1) 345 + 323+ 567 + 219

Your mind shud make 3 rounds to quickly calculate the sum

Round 1:- Add all the digits in hundreth place...
that is 300 + 300 + 500 + 200 = 1300

Round 2- Add all the digits in tenth place...
that is 40 + 20 + 60 + 10 = 130

Round 1 + Round 2 = 1430

Round 3:- Add all the digits in units place...
that is 5 + 3 + 7 + 9 = 24

Round 1 + Round 2 + Round 3 = 1430 + 24 = 1454
While this might seem to be a very tediuos process its actually faster than your normal addition process...


Important :- Now if for the above question say you had the following as options to your answers
1) 1232
2) 1454
3) 1563
4) 1769
5) 2137

There was no need to calculate the entire sum. All you could have done is calculate the sum of unit digits which gives you "4" in the units place. Now of all the options available, there is only one option which has "4" in its units place. So mark option 2 as your answer.



..............




2) Use approximation always to arive at ratios

For eg 34/22 is approx 33/22 which is 3/2 which is 1.5...
so 34/22 is slightly above 1.5

How I cracked CET 2009...How was Mission JBIMS accomplished...

Practice makes man perfect. I have experienced this adage to come true in my CET 2009 experience. Before CET 2009, my previous two CETs fetched me 99.57%tile and 98.43%tile. But in the earlier CETs I didnt practise much.

Turning Point:- I spoke to 99.99%tiler Puneet Tulsyan, about how he did he go about hs preparations to get such a score. And he told me that he solved around 60+ mock papers and attempted 200 questions.

How did it pan out for me.

1) Starting from Jan, I used to solve atleast 1 paper each day.

2)I joined a test series. I also got mock papers from other coaching classes. I used to sit 2 and 1/2 hour on a stretc to solve each paper.

3) After solving each paper, I used to analyse my performance and find out any weaknesses in me. Then I used to separately work on those weaknesses to improve upon them.

4) By the time CET happened, I had solved around 50 mock papers in all.

5) In CET attmepting 190+ questions is of utmost importance to make it to JBIMS. So speed is as important as accuracy. I attempted 195 questions in CET 2009.

Advice to CET aspirants

1) CET questions are pretty simple. The only thing is that you must be quick on your feet to solve those.

2) There is no one strategy to crack CET. Solve atleast 50 + mocks and make your own strategy.

3) In the end if you can attempt 190+ questions, there is no need for a strategy...:)

4) Remember one thing, only JBIMS is A+ grade in CET and the rest all are B-C grade colleges. So aim no less than JBIMS.

All the best to all. I hope my post will help you guys. As soon as I get time, I shall add the tricks on this blog.