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Question

Choose the correct answers from the alternatives given.
If a = 34, b = c = 33, then the value of a3+b3+c3−3abc is

A
0
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B
111
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C
50
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D
100
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Solution

The correct option is D 100
a3+b3+c33abc=(a+bc)2[(ab)2+(bc)2+(cd)2]
(34+33+332)[(3433)2+(3333)2+(3334)2]
1002×[(1)2+0+(1)2]=1002(1+01)=100

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