# Which of the foll

i. A = {2, 4, 6, 8, 10}

n(A) = 5

B = {1, 3, 5, 7, 9}

n(B) = 5

n(A) = n(B)

A ≈ B [≈ equivalent]

ii. X = {x : xN, 1<x<6}

The possible values of x : 2, 3, 4, 5

X = {2, 3, 4, 5}

n(X) = 4

Y = {x : x is a vowel in the English Alphabet}

Y = {a, e, i, o, u}

n(Y) = 5

n(X) ≠ n(Y)

The sets X and Y are not equivalent.

iii. P = {x : x is a prime number and 5 < x < 23}

The prime numbers between 5 and 23 are: 7, 11, 13, 17, 19

P = {7, 11, 13, 17, 19, 21}

n(P) = 6

Q = {x : xW, 0≤x<5}

The possible values of x : 0, 1, 2, 3, 4

Q = {0, 1, 2, 3, 4}

n(Q) = 5

n(P) ≠ n(Q)

The sets P and Q are not equivalent.

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