[計量] 幾題問題請教
1.Are there exactly 3 distinct symbols used to create the code words
in language Q?
(1) The set of all code words in language Q is the set of all possible
distinct horizontal arrangements of one or more symbols, with no
repetition.
(2) There are exactly 15 code words in language Q.
Ans: C 看不太懂題意..
2.If each of 4 subsidiaries of Corporation R has been granted a line of credit
of $700000 and each of the other 3 subsidiaries of Crporation R has been
granted a line of credit of $112000. What is the average line of credit
granted to a subsidiary of Corporation R?
(A) $1568000
(B) $448000
(C) $406000
(D) $313600
(E) $116000
Ans: B 請問怎麼算的?
3.A family made a down payment of $75 and borrowed the balance on a set of
encyclopedias that cost $400. The balance with interest was paid in 23
monthly payments of $16 each and a final payment of $9. The amount of
interest paid was what percent of the amount borrowed?
(A) 6%
(B) 12%
(C) 14%
(D) 16%
(E) 20%
Ans: D 麻煩解釋一下怎麼算的...
Thanks
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