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1 . (1000)7+1018=?

A. 10
B. 100
C. 10000
D. 1000

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Answer: Option D

Explanation:

Hints:

10¹⁸ = (10³)⁶= ( 1000)⁶

( 1000)⁷÷ ( 1000)⁶ = 10000⁷/1000⁶ = ( 1000) ^{7 - 8} = 1000