MCQ
જો ${(1 + x)^n} = {C_0} + {C_1}x + {C_2}{x^2} + ..... + {C_n}{x^n},$ તો ${C_0} - {C_2} + {C_4} - {C_6} + .....$ = . . .
- A${2^n}$
- B${2^n}\cos \frac{{n\pi }}{2}$
- C${2^n}\sin \frac{{n\pi }}{2}$
- ✓${2^{n/2}}\cos \frac{{n\pi }}{4}$
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