Question
4−2+4−1+40+42 = ___
Answer: Option A
:
A
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A
Note that a0=1 for any non-zero integer a.
Also, for integers a (≠0) and m,
a−m=1am.
⟹4−2=142=116 and 4−1=141
∴4−2+4−1+40+42=116+14+1+16
=1+4+16+25616
=27716
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