What is the coefficient of $x^{100}$ in $(1 + x + x^2 + x^3 +.... + x^{100})^3$ ?
What is the coefficient of $x^{100}$ in $(1 + x + x^2 + x^3 +.... + x^{100})^3$ ?
- A
$^{100}C_3$
- B
$^{102}C_3$
- C
$^{102}C_2$
- D
$^{105}C_2$
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