Which of the following is the closest to 11*10^20–9*10^10?
A. 10^2B. 10^7C. 10^10D. 10^20 E. 10^21
=>9*10^10 is a relatively small number compared with 11*10^20.
11*10^20–9*10^10 is approximate to 11*10^20, which is similar to 10^21.
Ans: E
A. 10^2B. 10^7C. 10^10D. 10^20 E. 10^21
=>9*10^10 is a relatively small number compared with 11*10^20.
11*10^20–9*10^10 is approximate to 11*10^20, which is similar to 10^21.
Ans: E
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