Number of Positive Integer Solutions How to Find Part 2

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Part 1 Number of non-negative integer solution of linear equation

Part 2 Number of positive integer solutions of linear equation

Part 3 Number of non-negative integer solution of linear equation

Part 4 Number of non-negative integer solution of linear equation

Part 5 Number of non-negative integer solution of linear inequation

Part 6 Number of non-negative integer solution with non-unity coefficient

Part 7 Number of non-negative integer solution when coefficients are greater than 1

Complete Playlist:

#iitjeemathematics, #iitjeemath,#iitjeemains,

[KingofArmageddon]

I finally see the light!!! 💡!!! you have my gratitude 🙏🏻

[arindamdey]

After a long search I got this video
This video help me lot
Your voice is so polite 😍

[_wahahaha]

Reviewing after completing all 7 videos!
Really great sir! Thank you so much!

This is exactly what I needed
A 3-5 Min video explaining a single concept clearly and then completing with an example!

For each concept u made a 3-4min video and in this playlist only 7 videos explaining it all in approximately 21-25 Mins. I clearly understood how to find number of solutions in such cases!

U really need a big shoutout!

Will post this comment in every video of this playlist!

Guys really this is helpful!!

Once again Thank you so much sir ❤❤❤❤❤

[adityaadit]

Wait what is the reason you subtract all the x with 1?

Edit:
my first guess is that to achieve x > 0, x > 0 is equal to x ≥ 1, then you make it x = 1 so you can get x - 1 = 0
Is that correct?

[pvlakshmipriya]

15. How many solutions are there to the equation x_{1} + x_{2} + x_{3} + x_{4} + x_{5} = 21 where x_{i}, i = 1, 2, 3, 4, 5 is a nonnegative integer such that

a) x 1 >=1?

b) x_{i} >= 2fori = 1, 2, 3, 4, 5 ?

c) 0 <= x_{1} <= 10 ?

d) 0 <= x_{1} <= 3, 1 <= x_{2} < 4 and x_{3} >= 15 ?

[Shubham_gupta]

Great explanation, thumbs up for ur video

[speckeater]

I love you so damn much bro, you just saved my semester ❤️

[Gunno]

Good video but I'm not sure why you didn't give the general formula at the end: n-1 C r-1

[pvlakshmipriya]

pls sir we are having exams mams did not explain,
can u fast reply to our question give us answer

[pvlakshmipriya]

if xi>=1, x1>=2, 0<=x1<=3

[Stocksplit]

please avoid the music. its good enough without it and much easier to listen

[aparnakarmakar]

There will be a easy approach. y = 10-x way

[suascb]

But they gave greater sign instead of equal sign sir.