A) 8
B) 6
C) 8
D) 9
Correct Answer: A
Solution :
[a] The unit digit in \[{{(15)}^{981}}\] is 6. The unit digit in \[{{(9)}^{789}}\] is 9. The unit digit in \[{{(6)}^{50}}\] is 6 \[\therefore \]The unit digit in \[{{(15)}^{981}}+{{(9)}^{789}}-{{(6)}^{50}}\] is \[5+9-6=8.\]You need to login to perform this action.
You will be redirected in
3 sec