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Question of the day
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Question of the Day (27-Nov-19)

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If f(x) = ax4 + bx3 + cx2 + dx + e and m, n, o and p are the roots of the equation f(x) = 0, then what is the value of (m + n + o + p + mn + mo + mp + no + np + op + mno + mnp + mop + nop + mnop)? Given f(0) = 1, f1(0) = 1, f2(0) = 2, f3(0) = 6 and f4(0) = 24, where fn(x) is the nth  derivative of f(x).
OPTIONS
 
 1)1
 2)22
 3)9
 4)18
 5)None of these

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