If c 0 +c 1 +c 2 +.........+c n =256,then 2n c 2 is equal to A... 56 B...120 C...28 D...91

Question

If c 0 +c 1 +c 2 +.........+c n =256,then 2n c 2 is equal to A... 56 B...120 C...28 D...91

Aditya Gupta · Answer

we know that c 0 +c 1 +c 2 +.........+c n = 2^n so, 2^n=256=2^8 or n=8 so, 2n c 2 = 16C2= 120 , so option B is correct

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If c 0 +c 1 +c 2 +.........+c n =256,then 2n c 2 is equal to A... 56 B...120 C...28 D...91

If c₀+c₁+c₂+.........+c_n=256,then ²ⁿc₂is equal to
A... 56
B...120
C...28
D...91

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If c 0 +c 1 +c 2 +.........+c n =256,then 2n c 2 is equal to A... 56 B...120 C...28 D...91

If c0+c1+c2+.........+cn=256,then 2nc2 is equal toA... 56B...120C...28D...91

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If c₀+c₁+c₂+.........+c_n=256,then ²ⁿc₂is equal to
A... 56
B...120
C...28
D...91