Question

A cascade of three identical modulo-5 counters has an overall modulus of
1. 5
2. 25
3. 125
4. 625

Answer 1

Correct Answer - Option 3 : 125

Concept:

Overall modulus of a cascaded system is the product of their individual modules.

For example:

A counter of modulus p, modulus q, and modulus r is cascaded, then the modulus of the overall counter is p × q × r

Calculation:

Given, 

The modulus of all three counters is 5

Then the overall modulus = 5 × 5 × 5 = 125