Rule of 72
The time required for a given Principal to double (assuming 
Conversion Period) for CompoundInterest is given by solving
 | (1) |
 | (2) |
 | (3) |
(left plot) and difference between actual and time calculated using the rule of72 (right plot) as a function of the interest rate 
.See also Compound Interest, Interest
References
Avanzini, J. F. Rapid Debt-Reduction Strategies. Fort Worth, TX: HIS Pub., 1990.
- Multiplicative Persistence
- Multiplicative Primitive Residue Class Group
- Multiplicity
- Multiplier
- Multiply Connected
- Multiply Perfect Number
- Multisection
- Multivalued Function
- Multivariate Analysis
- Multivariate Function
- Multivariate Theorem
- Mu Molecule
- Mutant Knot
- Mutation
- Mutual Energy
- Mutually Exclusive
- Mutually Singular
- Myriad
- Myriagon
- Mystic Pentagram
- Méiré Pattern
- Ménage Number
- Ménage Problem
- Möbius Band
- Möbius Function