The error of posting $50 as $500 can be detected by
A. totaling each account’s balance in the ledger.
B. dividing the out-of-balance amount by 2.
C. dividing the out-of-balance amount by 9.
D. examining the chart of accounts.
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A doctor purchases medical supplies of $640 and pays $290 cash with the remainder on account. The journal entry for this transaction would be which of the following?
A. SuppliesAccounts ReceivableCash
B. SuppliesAccounts PayableCash
C. SuppliesAccounts PayableCash
D. SuppliesAccounts ReceivableCash
具有n个顶点的完全有向图的弧数为（）
A. n(n-1)/2
B. n(n-1)
C. n*n
D. n*n-1
一个具有n(n＞0)个顶点的连通无向图最少有( )条边。
A. n-1
B. n
C. n+1
D. n+2
一个n条边的连通无向图，其顶点的个数最多为（）
A. n-1
B. n
C. n+1
D. nlogn
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