Question

How many Ways can a student score exactly 60 marks in three papers of 60 marks each.​

Answer 1

Step-by-step explanation:

here is your answer..

1. Get the hard subjects out of the way first. You'll be working on it when your brain is fresher, which will make it easier than if you tried to do it when your brain is tired. ...

2.Take breaks. Studying for too long without breaks can wear you down. ...

3.Don't procrastinate. ...

4.Skip around subjects.

pls give it a like..and make it the braniest answer..

Answer 2

$\huge\star{\tt{\underline{\underline{\red{Answer}}}}}\star$

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coefficient of ${x}^{60}$ in (${x}^{0} + {x}^{1}+{x}^{2} ...........$ ) (${x}^{0} + {x}^{1}+{x}^{2} ...........$ ) (${x}^{0} + {x}^{1}+{x}^{2} ...........$ )

$\implies$ $\large\frac{1- {x}^{61}}{1-x} \frac{1- {x}^{61}}{1-x} \frac{1- {x}^{61}}{1-x}$

$\implies$ (${1-{x}^{61}}^{3}$)(${1-x}^{-3}$)

$\implies$ $\big( ^{3}C_{0} - ^{3}C_{1} {x}^{61}- ^{3}C_{2}{x}^{60} ..... \big)$(${1-x}^{-3}$)

$^{3}C_{0} x$ coefficient of ${x}^{60}$ (${1-x}^{-3}$)

$\large{\boxed{n=3,r=60}}$

i.e $^{n+r-1}C_{r}$

$\implies$$^{3+60-1}C_{60}$

$\implies$ $^{62}C_{60 \:or \:2}$

$\implies$$\large\frac{62 x 61}{2}$

$\implies$$\huge{\boxed{\boxed{1891}}}$

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