Question

1.
Which of the following sets are empty sets? Justify your answer.
A = {x : x2 = 4 and 3x = 9}.
(ii) The set of all triangles in a plane having the sum of their three angles less
than 180
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Answer 1

Step-by-step explanation:

Empty set is a set which does not contains any element.

i] Set of all even natural numbers divisible by 5

→ Not a Empty set, e.q. 10, seven natural number &

divisible by 5.

ii] Set of all even prime number

→ not a Empty set e.q. 2 is even prime number

Answer 2

Answer:

your answer is in attachment