a*****g
发帖数: 1320 | 1 报告：With tons of great help from IDs of this board, 小孩passed Mathcount
School Sprint Round and Target Round and was selected in their school team
to compete in Charter.
Thank you! Thank you!
One more problem:
In base b, 321-123=154. What is the value of b? | c*b
发帖数: 3126 | 2 看最后一位，b+1-3=4, b=6
【在 a*****g 的大作中提到】
: 报告：With tons of great help from IDs of this board, 小孩passed Mathcount
: School Sprint Round and Target Round and was selected in their school team
: to compete in Charter.
: Thank you! Thank you!
: One more problem:
: In base b, 321-123=154. What is the value of b?
| a*****g
发帖数: 1320 | 3 Thanks a lot! I haven't learn that BASE stuff at all.
【在 c*b 的大作中提到】
: 看最后一位，b+1-3=4, b=6
| s*******y
发帖数: 46535 | 4 Haha, you are the role model for Amy Chua
【在 a*****g 的大作中提到】
: Thanks a lot! I haven't learn that BASE stuff at all.
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