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The value of sum(r=0)^10cos^3((rpi)/3) i...

The value of `sum_(r=0)^10cos^3((rpi)/3)` is

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The value of sum_(r=0)^(10)cos^3((rpi)/3) is equal to (a) 1/4 (b) 1/8 (c) -1/4 (d) -1/8

The value of sum_(r=0)^(10)cos^3((rpi)/3) is equal to (a) 1/4 (b) 1/8 (c) -1/4 (d) -1/8

The value of sum_(r=0)^(10)cos^3((rpi)/3) is equal to (a) 1/4 (b) 1/8 (c) -1/4 (d) -1/8

The value of sum_(r=0)^(10)cos^(3)((r pi)/(3)) is

The value of sum_(r=0)^(10)cos^(3)((r pi)/(3)) is equal to (a) (1)/(4) (b) (1)/(8)(c)-(1)/(4)(d)-(1)/(8)

The value of sum_(r=1)^(10)r.r! is

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