<ol>
<li> What is the number of digits obtained by carrying out 11,1113?</li>
</ol>
<p>(A) 5
(B) 7
(C) 12
(D) 13
(E) 15</p>
<p>EXPLANATION
If you punch the expression into your calculator, youll get the answer in scientific notation, 1.371 1012. This is a 13-digit number, since the 1012 represents the digits after the decimal point.</p>
<p>This was on the sparknotes online tests, anyone??? thanks</p>
<p>You seem to be missing something. I see the number 11,113, but I don’t see an expression. 1.371 10^12 is a 13 digit number, but I’m not sure how it was obtained.</p>
<p>The test and explanation forgot the “^” exponentiation (“to the power of”) sign. Thus, when you plug in 11,111^3 into a calculator, it will give you “1.371E12” - this means 1.37*10^12. And thus, the “12” represents the number of times the decimal place is shifted right, and thus, including the first digit, the expression has 13 digits. I hope that clears up some confusion. I’ve had a lot of problems and glitches with the Sparknotes tests, including one question that literally told me “B is not the correct answer. The correct answer is B.” So take those tests with a grain of salt!</p>
<p>I think you meant 11111^3. 11,1113 doesn’t really mean anything.</p>
<p>Yeah, just use your calculator. You could solve it without a calculator by noting that 11111 ~ 1.1<em>10^4, cube it and you get somewhere around 1.3</em>10^12.</p>