Difference between revisions of "1950 AHSME Problems/Problem 7"
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If the digit <math>1</math> is placed after a two digit number whose tens' digit is <math>t</math>, and units' digit is <math>u</math>, the new number is: | If the digit <math>1</math> is placed after a two digit number whose tens' digit is <math>t</math>, and units' digit is <math>u</math>, the new number is: | ||
− | <math> \textbf{(A)}\ 10t+u+1\qquad\textbf{(B)}\ 100t+10u+1\qquad\textbf{(C)}\ | + | <math> \textbf{(A)}\ 10t+u+1\qquad\textbf{(B)}\ 100t+10u+1\qquad\textbf{(C)}\ 1000t+10u+1\qquad\textbf{(D)}\ t+u+1\qquad\\ \textbf{(E)}\ \text{None of these answers} </math> |
==Solution== | ==Solution== | ||
− | By placing the digit <math>1</math> after a two digit number, you are changing the units place to <math>1</math> and moving everything else up a place. Therefore the answer is <math>\boxed{\textbf{( | + | By placing the digit <math>1</math> after a two digit number, you are changing the units place to <math>1</math> and moving everything else up a place. Therefore the answer is <math>\boxed{\textbf{(B)}\ 100t+10u+1}</math>. |
==See Also== | ==See Also== |
Latest revision as of 20:23, 27 January 2015
Problem
If the digit is placed after a two digit number whose tens' digit is , and units' digit is , the new number is:
Solution
By placing the digit after a two digit number, you are changing the units place to and moving everything else up a place. Therefore the answer is .
See Also
1950 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 6 |
Followed by Problem 8 | |
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