Ans will be 4, with lagrange theorem

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Every group of prime order has no proper ans nontrivial subgroup.

So, here order 1,3,5 forms proper trivial subgroup and also nonisomorphic

Now, order 10 also trivial subgroup.

So, total 4 subgroup, which are trivial too

So, 4 groups

So, here order 1,3,5 forms proper trivial subgroup and also nonisomorphic

Now, order 10 also trivial subgroup.

So, total 4 subgroup, which are trivial too

So, 4 groups