Question 27
Number BasesThe number 1621 was subtracted from 6244 in base x. If the result was 4323, find x.
- A.Seven
- B.Eight
- C.Nine
- D.Ten
Show the answer and explanation
Answer: A (Seven)
Explanation
Check by adding 4323 + 1621 = 6244: in the tens column 2 + 2 = 4, but in the hundreds column 3 + 6 = 9 must give 2 carry 1, so x = 9 − 2 = 7.