6 results for “doubling”
Time for a population to double.
Exponential bacterial growth by generations.
Approximate years to double an investment.
When one factor is even, halve it and double the other to reach an easier multiplication.
Multiplying by 4 is doubling twice; by 8 is doubling three times. No memorised tables needed.
Estimate how many years it takes an investment to double: divide 72 by the annual interest rate.