Base Offering Circular - Multifamily 482090 91 Weighted Average Certificate Rate ............................................ With respect to designated Ginnie Mae Multifamily Certificates and a Cut-off Date, the per annum rate of interest equal to the average, expressed as a percentage, of the Mortgage Rates of some or all the Mortgage Loans underlying the Ginnie Mae Multifamily Certificates, less, in the case of each Mortgage Loan, the applicable servicing fee and Ginnie Mae Guaranty Fee, weighted on the basis of the respective current principal balances of such Mortgage Loans after giving effect to all payments of principal due on or before the Cut-off Date. Such average interest rate may be subject to certain additions, subtractions, multiples, caps, floors and governors. Weighted Average Coupon Class ........................................... A Class whose Interest Rate is based on the Weighted Average Certificate Rate of some or all Trust MBS in a Series (or designated Trust Asset Group or Groups) as described in the related Offering Circular Supplement. Weighted Average Mortgage Interest Rate................................ With   respect   to   designated   Ginnie   Mae   Multifamily Certificates  and  a  Cut-off  Date,  the  per  annum  rate  of interest equal to the average, expressed as a percentage of the  Mortgage  Rates  of  all  the  Mortgage  Loans  underlying the  Ginnie  Mae  Multifamily  Certificates,  weighted  on  the basis  of  the  respective  current  principal  balances  of  those Mortgage  Loans  after  giving  effect  to  all  payments  of principal due on or before the Cut-off Date. Weighted Average Life .............. With respect to any Class, the average amount of time (in years) that will elapse from the date of its issuance until each dollar of principal has been repaid to the investor, determined by (a) multiplying the amount of the net reduction, if any, of the Class Principal Balance (or Class Notional Balance) of such Class from one Distribution Date to the next Distribution Date by the number of years from the Closing Date to such next Distribution Date, (b) summing the results and (c) dividing the sum by the aggregate amount of the net reductions of the Class Principal Balance (or Class Notional Balance) of such Class referred to in clause (a).