# UGCNET-June-2019-II: 15

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What will be the number of states when a MOD-$2$ counter is followed by a MOD-$5$ counter?

1. $5$
2. $10$
3. $15$
4. $20$

edited
2
Answer $10$, Simply multiply MOD value

When $mod-x$ counter is followed by $mod-y$ counter then the resultant counter is always $mod-(x*y)$ counter.

$\therefore$ Option $2.$ is correct.

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