Question

Write in roster form
A = { x : x = n2, 4 ≤ n ≤ 8 , n ε N }

Answer 1

Answer:

Natural numbers less than 8 are 1,2,3,4,5,6,7

n

2

i.e., squares of these numbers are 1,4,9,16,25,36,49

The given set can be written as

{1,4,9,16,25,36,49} {roaster form}

Or {squares of first seven natural numbers} (description form)