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Express 16.54 x 105 - 6.76 x 108 + 0.23...

Express 16.54 x 105 - 6.76 x 108 + 0.23 x 106 in standard form

A.

1.66 x 104

B.

1.66 x 105

C.

1.65 x 105

D.

1.65 x 104

Correct answer is A

16.54 x 105 - 6.76 x 108 + 0.23 x 106

⇒ 1.654 x 104 - 6.76 x 108 + 2.3 x 107

⇒ 1.654 x 104 - 0.000676 x 104 + 0.0023 x 104

⇒ (1.654 - 0.000676 + 0.0023) x 104

∴ 1.655624 x 104 ≃ 1.66 x 104