small binomial doubt
over here i simplified till 60C24 *5³ and dont know how to proceed further
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@Apu
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+solved @user to close the thread when your doubt is solved. Mention the user who helped you solve the doubt. This will be added to their stats.I dont know how to do this sum but
https://www.sarthaks.com/3179798/if-the-coefficient-of-x-10-in-the-binomial-expansion-of
they have solved it. SarthaksEconnect is safe and secure so dont worry while using it. (Not Sponsoring.)
that's what my doubt is the last step doesn't make sense to me
you got it
just one more step is left
Comrade Rock Astley
We see that factors like 37, 38 and so on do not have 5 as a prime factor
Since l is not required we just need k, so our concern is only towards the factors that provide 5
so
Comrade Rock Astley
we see that 5^6 is in the numerator and 5^4 is in the denominator
So we get 5^2
Our coefficient is 60C24 times 5^3
So that will be some number x 5^2 x 5^3
Hence k=5
Ohhh that's pretty thoughtful thak you so much sir
+solved @Comrade Rock Astley
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