alleryThe binomial coefficients ⁿC_r and ⁿC_(n−r) are
AEqual only when n is even
BAlways equal
CEqual only when r = 0
DReciprocals of each other
Answer & Solution
Correct answer: B. Always equal
ⁿC_r = ⁿC_(n−r) for all 0 ≤ r ≤ n — Pascal's symmetry.
This is why each row is a palindrome.
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