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If sum(r=1)^n r^4=I(n),t h e nsum(r=1)^n...

If `sum_(r=1)^n r^4=I(n),t h e nsum_(r=1)^n(2r-1)^4` is equal to a. `I(2n)-I(n)` b. `I(2n)-16 I(n)` c. `I(2n)-8I(n)` d. `I(2n)-4I(n)`

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