# 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 $g:R \rightarrow R$ be defined as

$\large{\displaystyle{g(y)=lim_{x \rightarrow \infty} (f(x+y)-f(x))}}$ (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 $\large{g(y+z)=g(y)+g(z)}$

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

• 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 $\dfrac{1}{x-a}$

III)1st part is really easy.... answer $6^{20}$ And then i couldnt do this part....

Note by Md Zuhair
2 years ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

• Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
• Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
• Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$ ... $$ or $ ... $ to ensure proper formatting.
2 \times 3 $2 \times 3$
2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
\frac{2}{3} $\frac{2}{3}$
\sqrt{2} $\sqrt{2}$
\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$

Sort by:

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????

- 2 years ago

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

- 2 years ago

Where are you staying zuhair? Shanti shadna?

i dropped my plan. i was alloted there. i didnt attend d interview

- 2 years ago

How did you do in jee advanced?

- 2 years ago

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

prep kaise chal rhi h

- 1 year, 10 months ago

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…)…

- 1 year, 10 months ago

quiz club nhi.. I want to join robotics club...

- 1 year, 10 months ago

Hey bro.. kaisa hai?

- 1 year, 6 months ago

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!!!

- 1 year, 6 months ago

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?

- 1 year, 5 months ago

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....

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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!!!

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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

- 1 year, 5 months ago

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

- 1 year, 5 months ago

waise percentile kya rha?

- 1 year, 5 months ago

Aur bro!!! Kaisa hai yaar?!! What's going on aajkal?? Idk tu ab use bhi karta hai yeh website yaa nhi xD xD hogya clear bhai bas lekin lockdown ne freshers ke mazze leliye saare xD xD

- 6 months, 2 weeks ago

tu hai na freshie? senior se aise baat krega XDD. konse college mein hua bro tera? aur bta sab mast, mail id dia toh tha, wha pe hi krleta bhai mail, ye maine ese hi khola ajj toh dikh gya tera comment wrna toh kya pta

- 5 months, 2 weeks ago

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

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

Will you join cmi or IIT?

Most probably IIT

- 2 years ago

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

- 2 years ago

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

- 2 years ago

ISI intelligence agency of Pakistan?

- 1 year, 4 months ago

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

- 1 year, 4 months ago

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

- 1 year, 4 months ago

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

- 1 year, 4 months ago

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

- 1 year, 3 months ago