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Note 2 - Basis of Presentation and Significant Accounting Policies (Tables)
6 Months Ended
Apr. 30, 2021
Accounting Policies [Abstract]  
Schedule of assumptions used

The fair value of each option granted during the period ended April 30, 2021 and 2020 was estimated on the date of grant using the Black-Scholes-Merton option-pricing model with the weighted average assumptions in the following table:

 

      2021       2020  
Expected dividend yield     0 %      
Expected option term (years)     10        
Expected volatility     301.53 %      
Risk-free interest rate     1.62 %