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Finite and Infinite Set

Say true or f...

Question

Say true or false:
The sets $A = {b, c, d, e}$ and $B = {x : x$ $is a letter in the word "master"}$ are joint.

True

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False

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Solution

The correct option is A True
Joint sets have elements in common.
Now, $B = {m, a, s, t, e, r}$
Since both the sets $A$ and $B$ have $e$ in common, they are joint sets.

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