When a certain number X is divided by 143, the remainder is 21. Which of the following numbers, if added to X, would result in a number divisible by 13?	Pick one.
A) 7
B) 21
C) 5
D) 47
E) 55
Now X= 143q + 45 = 11*13*q + 21..so we have to make only 21 div by 13..   21 + 5= 
<gadget id="calculator">21 + 5</gadget>
<output>26</output>
26 divisible by 13 , add 5   ans 5
<result>C</result>
When a certain number X is divided by 143, the remainder is 21. Which of the following numbers, if added to X, would result in a number divisible by 13?