ISI 2017 key

[Halflife]

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[Seecha]

.... argghh ...i don't want to see that ......
btw hw many ques. you have attended ?

[Halflife]

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[shiva]

Maths was a bit tricky , what about Eco. How did you do it?

Being this the first objective by ISI what could be the cutoff, any opinions.

[Halflife]

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[Halflife]

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[shiva]

Ha ha, that's true. What are the other exams you will be attempting and what about dse application. When will the procedure may start , any idea

[Halflife]

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[shiva]

I have attempted 25 in both the papers

[Halflife]

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[MAC]

I attempted 28 in PEA, but had not studied much of eco syllabus, so could attempt only 20 in PEB.
Did you guys find PEB paper difficult, especially in comparison to DSE previous papers?

[Halflife]

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[Diya]

Good to know that I'm not the only one feeling so. Almost all pea questions were HOTS questions.

[Halflife]

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[MAC]

Do they take both maths and economics paper into account for final merit? I thought maths paper(PEA) was only as a screening round!

[Econenthusiast]

[Asd1995]

Hey guys,

Engineer here. Math wasn't so tough personally but I got absolutely destroyed and mauled in economics. I wasn't expecting Macro to be very theoretical. I too hope the economics cutoff is 60ish or less, I may get in then.

[Asd1995]

About the monkey question, it can be solved by using binomial distribution and summing probabilities which form a geometric series. Alternatively you can put values of k, and look for the answer that makes sense. Couple of them were absurd and could be ruled out at sight.

Probability it reaches k= Probability it reaches in 1jump, plus probability it reaches in two jumps and so on. Individually these are going to be bionomial.

[Econenthusiast]

But isn't the binomial distn a discrete probability distn. What was given was a continuous pdf between [1/2,1] which shows that the monkey moves one step to the right

[Asd1995]

P is fixed, it can take any value between half and one, but we begin our analysis by fixing P. If p keeps varying jump to jump as you hypothesised it would be an interesting question but a near impossible solution for me.