Form the intersection for the following sets. r = {10, 15, 20} s = {20, 25} r ∩ s = a. { } b. {10, 15, 25} c. {20} d. {10, 15, 20, 25}

Option 'c' is correct.

Step-by-step explanation:

Since we have given that

R={10,15,20}

and

S={20,25}

As we know that Intersection means that elements which are common to both the sets.

And it is denoted by '∩'.

So, R∩S={20}

As 20 is the only element that is common in both the sets.

Hence, option 'c' is correct.