Evaluate 212 3 - 121 3 222 3 - JAMB Mathematics 2020 Question
Evaluate (212)\(_3\) - (121)\(_3\) + (222)\(_3\)
A
(313)\(_3\)
B
(1000)\(_3\)
C
(1020)\(_3\)
D
(1222)\(_3\)
correct option: c
When working in base 3, the largest number is 2. Just like in base 10, whenever you get a sum of values up to 3, you write 0 and carry over 1 and added to the next digit.
Hence,
212
- 121
+ 222
= 1020
Ans: (1020)\(_3\)
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