# Sequential Circuits - Counters

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A mod-2 counter followed by a mod-5 counter is

a) Same as mod-5 counter followed by mod-2 counter

c) A mod-7 counter

d) None
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None
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@Utkarsh, Then isn't option a also a decade counter?
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mod 10 counter
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Can someone please explain with diag / tables ?
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Can someone provide a satisfactory explanation for this question?
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d ??

mod-2 counter followed by mod-5 it denote cascading so the equivalent counter is mod-(2*5) means mod-10.

we know that mod-10 counter is also called as BCD counter or Decade counter.

so option (B) is correct.

## Related questions

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143 views
If there are total 16 different states in a system and there is one external input, then how many flip flops are required? Is it 3 or 4 ? Thank you.
Consider the following question: My explanation: A clock cycle time should be large enough that all flip-flops can come in a stable state before the next clock cycle starts. Suppose cycle 1 is just completed and cycle 2 is just about to start: 1. to reach the result ... by Arjun on the following link, it is $\frac{1}{20ns}$. Can someone explain, please? https://gateoverflow.in/26442/gate1991_5-c