The following are the current prices of 1000 zerocoupon bond
     The following are the current prices of $1.000 zero-coupon bonds:  If the one-year forward rate for year 2 (i.e. the one-year effective rate during year 2) is 8%. determine X.  865.35 873.52 874.24 876.82 881.68  A $100 par value bond with 7% annual coupons and maturing at par in 4 years sells at a price to yield 6%. Determine the modified duration of the bond.  3.43 3.46 03.63 3.67 3.72  Determine the convexity of a five-year annuity-immediate with level annual payments, evaluated at I =0.  3.0 4.7 8.2 11.0 14.0  An investment will return $1.000 in two yean and $3,000 in five yean. Determine the ratio of the convexity of the payments to their modified duration, evaluated at i = 7.5%.  4.96 3.33  05.73 6.34 7.65 
  
  Solution
1. We are given that f[1,2] = 8%=.08
and for the first year we have
943.4(1+S1)=1000
or (1+s1) = 1000/943.4 , ------->(1)
and for the second year we have
X(1+S2)^2 = 1000
X(1+S1)(1+f[1,2]) = 1000 , ------>(2)
From (1) and (2)
X(1000/943.4)*(1+.08)=1000
=> X = 943.4/1.08 = 873.52
Hence option (B) is correct

