On October $1,2005,$ Fannie Mae issued a mortgage pass$-$through security, and the prospectus supplement stated the following:FANNIE MAE$*$MORTGAGE$-$BACKED SECURITIES PROGRAMSUPPLEMENT TO PROSPECTUS DATED JULY $01,2004$$$464,927,576\mathrm{.}0$ISSUE DATE OCTOBER $01,2005$SECURITY DESCRIPTION FNMS $05\mathrm{.}0000$ CL$-8448015\mathrm{.}0000$ PERCENT PASS$-$THROUGH RATEFANNIE MAE POOL NUMBER CL$-844801$CUSIP $31407$YRW$1$PRINCIPAL AND INTEREST PAYABLE ON THE $25$TH OF EACH MONTH BEGINNING NOVEMBER $25,2005$POOL STATISTICSSELLERWELLS FARGO BANK, N$.$A$.$SERVICERWELLS FARGO BANK, N$.$A$.$NUMBER OF MORTGAGE LOANS$1,986$AVERAGE LOAN SIZE$$234,312\mathrm{.}06$MATURITY DATE$10/01/2035$WEIGHTED AVERAGE COUPON RATE$5\mathrm{.}7500\%$WEIGHTED AVERAGE LOAN AGE$1$ moWEIGHTED AVERAGE LOAN TERM$360$ moWEIGHTED AVERAGE REMAINING MATURITY$359$ moWEIGHTED AVERAGE LTV$73\%$WEIGHTED AVERAGE CREDIT SCORE$729*$ Source: Fannie Mae.a$.$What does the pass$-$through rate of $5\%$ for this security mean?b$.$What is the average note rate being paid by the borrowers in the loan pool for this security?c$.$Why does the pass$-$through rate differ from the average note rate paid by the borrowers in the loan pool for this security?d$.$What is the pool number for this security, and why is the pool number important?e$.$What is the prefix for this security, and what does a prefix indicate?f$.$The maturity date for this security is shown as $10/01/2035.$ An investor in this security might be concerned about its very long maturity $(30$ years$).$ Why is the maturity date a misleading measure of the securitys maturity?g$.$If an investor purchased $$15$ million principal of this security and, in some month, the cash flow available to be paid to the security holders $($after all fees are paid$)$ is $$12$ million, how much is the investor entitled to receive?h$.$Every month, a pool factor would be reported for this security. If the pool factor for some month is $0\mathrm{.}92,$ what is the outstanding mortgage balance for the loan pool for that month?i$.$Why does the weighted average loan term differ from the weighted average remaining maturity?j$.$Wells Fargo Bank, N$.$A$.,$ is identified as the seller and the servicer. What does that mean?k$.$What does the following mean: MORTGAGE$-$BACKED SECURITIES PROGRAM SUPPLEMENT TO PROSPECTUS DATED JULY $01,2004?$