The number 0.00000000016 when expressed in standard form is written as 1.a×10b. Find the value of (a+1)b.
A
70
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B
61
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C
60
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D
-70
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Solution
The correct option is D -70 0.00000000016=161011 =1.6×101011 =1.6×10−10 (Using aman=am−n) Since 1.a×10b=1.6×10−10, we have a=6 and b=−10. ∴(a+1)b=(6+1)(−10)=−70