SOA FM問題 - 考試
By Emily
at 2015-03-31T21:55
at 2015-03-31T21:55
Table of Contents
今天做ASM study manual FM 的題目如下:
Jason deposits 3960 into a bank account at t = 0. The bank credits interest
at the end of each year at a force of interest (delta) = 1/(8+t). Interest
can be reinvested at an annual effective rate of 7%.
The total accumulated amount at time t = 3 is equal to X. Caculate X.
(A) 5394 (B) 5465 (C) 5551 (D) 5600 (E) 5685
答案是(A),解答如下:
a(t) = (8+t)/8
i[t] = [a(t)/a(t-1)] -1 = 1/(7+t)
Interest earned each year:
3960*i[1] = 3960*(1/8) = 495
3960*i[2] = 3960*(1/9) = 440
3960*i[3] = 3960*(1/10) = 396
AV = 3960 + 495(1.07)^2 + 440(1.07) + 396 = 5393.53
原本的想法是覺得因為
a(t) = (8+t)/8 = 1 + t/8
所以就把他當成是 simple interest 的給息方式 ( i = 1/8 )
因此每年的 interest earned 都是
3960*(1/8) = 495
AV = 3960 + 495*(s3 angle 0.07) = 5551.37
剛好答案(C)也有這個數字...
想請問一下,這樣的想法是不是哪邊有錯誤?
若是往後又遇到 a(t) 的形式是 simple interest 的樣子,
能夠把他當成 simple interest 下去做嗎? 謝謝!
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另外,想請問一下 FM 通常都比較著重在考哪個部分呢? (因為這科第一次接觸到..)
目前正在準備5、6月的P跟FM,而且是第一次考,所以還想問一下除了把 sample
做熟之外,SOA網站有提供類似 CBT 的模擬測驗嗎? 想在考前熟悉一下考試感覺。
問得有點多...非常感謝看完的人...希望能夠幫忙解答!!
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