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I think only OPTION C can't be possible as 3 is not be he divisor of 40.
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Here as it is intersection so the order mmsut divide both H and K

here 3,20,4 does not divide 10

B,C,E  should be the answer
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According to lagranges theorem the order of a subgroup must be a divisor of the group.

And the intersection of two subgroups will also be a subgroup of the main group,which is a property as well.

Hence the answer is c.

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