What universal set (s) would you propose for each of the following: (i) The set of right triangles (ii) The set of isosceles triangles

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Solution

(i)

The set of right triangles is given.

The set that contains all the triangles must also contain all right triangles.

Therefore, the required universal set is the set of all triangles.

(ii)

The set of isosceles triangles is given.

The set that contains all the triangles must also contain all isosceles triangles.

Therefore, the required universal set is the set of all triangles.

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Similar questions

What universal set (s) would you propose for each of the following?

(i) The set of right triangles

(ii) The set of isosceles triangles.

(i)

(i i)

A

B

C

A

B

C

ξ

P =

Q =

R =

P \cap Q

R - P

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