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" If "^(n)C(12)=^(n)C(9)" find "^(21)C(n...

" If "^(n)C_(12)=^(n)C_(9)" find "^(21)C_(n)" ."

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If ""^(n)C_(4)=""^(n)C_(6) find ""^(12)C_(n) .

If ""^(n)C_(7)=""^(n)C_(5) , find ""^(n)C_(4) .

If ""^(n)C_(8)=""^(n)C_(2) , find ""^(n)C_(2) .

If ""^(n)C_(8)=""^(n)C_(2) , find ""^(n)C_(2) .

If ""^(n)C_(8)=""^(n)C_(2) , find ""^(n)C_(2) .

If ""^(n)C_(8)=""^(n)C_(2) , find ""^(n)C_(2) .

If ""^(n)C_(10)= ""^(n)C_(9) , find ""^(n)C_(19) .

If ""^(n)C_(21)=""^(n)C_(27)" find " ""^(49)C_(n)

(i) If ""^(n)C_(8)= ""^(n)C_(2) , find ""^(n)C_(2) . (ii) If ""^(n)C_(10)= ""^(n)C_(12) , determine n and hence ""^(n)C_(5) . (iii) If ""^(n)C_(9)= ""^(n)C_(8) , find ""^(n)C_(17) .