Question

Express A = { x : x ∈ N and 3x - 2 ≤ 14} in Description method​

Answer 1

Answer:

the answer is A = {1,2,3,4,5}

Step-by-step explanation:

the condition and the inequality implies that

0<3x - 2≤14.

from this we can find that A = {1,2,3,4,5}

as 3×6-2 = 18-2=16 > 14

but, 3×5-2 = 15-2 = 13 < 14 and as x belongs to the set of natural number. the First element should be 1 and the last element should be 5.

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