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If x is an integer and 2.134 × 10^x is less than 210,000, what is the greatest possible value for x?
A. 7
B. 6
C. 5
D. 4
E. 3
A. 7
B. 6
C. 5
D. 4
E. 3
20 Dec 2015, 07:36
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x is an integer and 2.134 × 10x is less than 210,000, what is the greatest possible value for x?
for 2.134 × 10x is less than 210,000 to remain true, the greatest number is 21,340, which makes x=4
D. 4
for 2.134 × 10x is less than 210,000 to remain true, the greatest number is 21,340, which makes x=4
D. 4
21 Dec 2015, 00:05
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Bunuel, shouldn't the question be comparing 2.134 * 10^x rather 2.134 * 10x?
Then the question can be rewritten as When is 2.1* 10^5 > 2.134 * 10^x Which leads to the answer x=4
Then the question can be rewritten as When is 2.1* 10^5 > 2.134 * 10^x Which leads to the answer x=4
