ISI Interview Experience

(Not detailed.. but the questions asked)

Hey guys! I just cleared CMI and is selected for ISI interview which is on 18th June at ISI Bangalore. One of my friend Srijanak gave interview on 5th June(or 6th).... and he just shared the questions asked to him.

These are some of the questions which are asked(I will provide you guys with some hints at the end of the NOTE).


  • If g is a function such that g:RRg:R \rightarrow R be defined as

g(y)=limx(f(x+y)f(x))\large{\displaystyle{g(y)=lim_{x \rightarrow \infty} (f(x+y)-f(x))}} (nothing about f was told so that they can tweak question and ask for which kind of f is your solution valid) Then we have to prove g(y+z)=g(y)+g(z)\large{g(y+z)=g(y)+g(z)}


  • Find the 100th100th derivative of f(x) w.r.t x where f(x)=x2+1x3xf(x)=\dfrac{x^2+1}{ x^3-x}

  • Find the number of elements in sample space if 20 dices are thrown together

    i) Find the number of cases where the sum of digits on the dices thrown are even,


SPOILER HINTS ARE DOWN!!!(WARNING)

I) Just start from where we have to prove

II)Try breaking the function summation of functions of the form 1xa\dfrac{1}{x-a}

III)1st part is really easy.... answer 6206^{20} And then i couldnt do this part....

Note by Md Zuhair
1 year, 5 months ago

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1 vote

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Congrats bro!!!!!!!!!!! PARTYYY TIME!!!!! Ab to tu bhi ISI ka interview mazze mein dekar pahunch jaayega!!! Yaa fir do you have any other plans for the college??? JEE Advanced kaisa gaya????

Aaghaz Mahajan - 1 year, 5 months ago

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Ha IIT ka hi plan hai.... Jaise tumko jo bola tha.... Toh Abhi dekhte hain... Agar JEEA mein Mann ka branch nahi mile toh change karna padhega plans... CMI mein PURA turion feed of 6 lakhs mereko scholarship milrha h

Md Zuhair - 1 year, 5 months ago

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Where are you staying zuhair? Shanti shadna?

A Former Brilliant Member - 1 year, 5 months ago

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@A Former Brilliant Member i dropped my plan. i was alloted there. i didnt attend d interview

Md Zuhair - 1 year, 5 months ago

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@Md Zuhair How did you do in jee advanced?

A Former Brilliant Member - 1 year, 5 months ago

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@A Former Brilliant Member how was your interview? Can you share the qs asked? my jee advance was ok...

Md Zuhair - 1 year, 5 months ago

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@Md Zuhair F(x)*f(f(x)) =1 F(0) = 3, Find f(4/5) if function is continuous.

A Former Brilliant Member - 1 year, 5 months ago

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prep kaise chal rhi h

Md Zuhair - 1 year, 3 months ago

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Heyyy!!!! Yaar abhi tak to sahi hai…..I just finished Resnick Halliday ka 12th class waala part and ab main 11th revise kar rhaa hun…..Maths to almost completed hai…..I am aiming to finish Physics class 11th by 20th August and fir Chem ki revision...….so by September beginning or max mid Sept, mera revision wagarah ho gyaa hoga and I'll have practise time...….

But tu yeh bata, how's college life??? Classes started?? and what about quiz clubs??(IIT ke kaafi badhiya hote hain…)…

Aaghaz Mahajan - 1 year, 3 months ago

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@Aaghaz Mahajan quiz club nhi.. I want to join robotics club...

Md Zuhair - 1 year, 3 months ago

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Hey bro.. kaisa hai?

Md Zuhair - 11 months, 3 weeks ago

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Arre bhaiiI!!! Main sahi hun bas ab Mains ki date aagyi hai so final prep time...…..aajkal vaise bhi AITS bhi hote hain so also uske liye thoda extra bhi padhna padhta hai…..but ab I am only lacking in chemistry imo…..baaki I'm hoping for the best!!!

How's your life going on???

Aaghaz Mahajan - 11 months, 3 weeks ago

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@Aaghaz Mahajan Mera toh sem break tha Pura december , toh coding krke nikal diya... aur sem1 m 9.67 cpi ayi h.... aur tu bta... KVPY nikla?

Md Zuhair - 11 months ago

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@Md Zuhair Niceee man kaafi accha acore hai!! Also, mujhe toh coding aajtak pasand nhi aayi xD!! haan stage 1 to clear ho gyaa ab interview round hai KVPY ka...Jan end mein hoga I guess....

Btw, main brilliant kaafi kam use karta hun ab, so tu hangouts pe hai kya?? uspe easy rehta hai to chat....

Aaghaz Mahajan - 11 months ago

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@Aaghaz Mahajan Hangouts, Yes! Idk if u have to contact me anyways... kyuki mein toh faltu student tha :P

Md Zuhair - 10 months, 3 weeks ago

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@Md Zuhair Arre bro....xD contact to karna banta hai yaar!! my email is aaghazaman@gmail.com send me a hangout invite.....yaa fir apni mail id hi dede xD

Also, aaj Mains thaa...….pheww…..chem ne leli yaar meri to ooof!!!! Log keh rhe hain chem easy aaya but meri to haalat kharab ho gyi thi use lol :P

Aaghaz Mahajan - 10 months, 3 weeks ago

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@Aaghaz Mahajan Arreh dekh chill kr.... approx kitna aarha? ruk i will send u a invite

Md Zuhair - 10 months, 2 weeks ago

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@Md Zuhair lmao invite nhi dikh rhaa...xD

Anyways approx to I guess 230s mein aa rhe hain out of 300.....but still dude maths mein maine ek do question mein itni faaltu galti kardi hai I think.....pata nhi kaisa hoga yaar!!!

Aaghaz Mahajan - 10 months, 2 weeks ago

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@Md Zuhair Upar se chemistry mein inhone antibiotics ka structure puch daala matlab yeh hadd kaun karta hai!!!!???!!! oof bro...

Aaghaz Mahajan - 10 months, 2 weeks ago

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@Aaghaz Mahajan Arre chill kr mera bhi pehle waale me 230s mein hi tha... so chill aur april k liye pel k padh...mera april m kaafi improve hua tha... 262 aagya tha.... u can do much better..waise shifts dependent hoti h.. my shift was tougher.. easier shifts mein logo ko aur asaani se mil rhe the 300+ .... never mind.... aur haan bhej diya m hangouts p yaar.. :P

Md Zuhair - 10 months, 2 weeks ago

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@Md Zuhair wait a sec.....300+ kaise aa sakte hain??? Paper hi 300 marks ka hai xDDD!! lmao....but yeah ab april ke liye dhyaan dena padhega chemistry ki taraf mujhe....kaafi zyaada ajeeb thi....although mere sabhi doston ka general perspective was that chem was the easiest lol.....

P.S. Bro tu aisa kar apni mail id hi bhej de cuz maine invite check karliyo and nothing is there....xDDD

Aaghaz Mahajan - 10 months, 2 weeks ago

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@Aaghaz Mahajan Haan likh saale mail id..... mdzuhair66@gmail.com .....accha m 360 k respect m baat krra tha.. issbaar ka pta ni tha

Md Zuhair - 10 months, 1 week ago

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@Aaghaz Mahajan waise percentile kya rha?

Md Zuhair - 10 months, 1 week ago

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3 Part 2 20C2 9 +20C4 *9 +20C69...

Either 2 dicw show odd...or 4 dices or 6....

A Former Brilliant Member - 1 year, 5 months ago

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Will you join cmi or IIT?

A Former Brilliant Member - 1 year, 5 months ago

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Most probably IIT

Md Zuhair - 1 year, 5 months ago

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Nice!!! Kaunsi??? And AIR kya aaya??

Aaghaz Mahajan - 1 year, 5 months ago

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@Aaghaz Mahajan AIR ka mat pooch.... IITBHU CSE Dual acc. to mock allotments... or it might change to IITR ECE ...

Md Zuhair - 1 year, 5 months ago

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ISI intelligence agency of Pakistan?

Abdullah Rizwan - 9 months ago

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xD...ISI is actually a college in India....ISI = Indian Statistical Institute

Aaghaz Mahajan - 9 months ago

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xD broo :P .. Legend you are!! Its an Indian college named as Indian statistical institute. One of the very few prestigious college for basic maths and statistics in India

Md Zuhair - 9 months ago

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My parents are actually from Pakistan so I thought of this (no hard feelings). Congrats on getting in though!

Abdullah Rizwan - 9 months ago

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@Abdullah Rizwan Thanks i cleared the exam, But i am studying in another college named IIT.

Md Zuhair - 9 months ago

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