Question

Find the cardinal number of set Q = {y : y = 3n4 , n ∈N and 2 < n ≤5}

Answer 1

Hi ,

It is given that ,

Q ={ y:y = 3n⁴ , n€N and 2<n≤5}

n = 3 , 4 ,5

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n | y = 3n⁴

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3 | y = 3 × 3⁴ = 243

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4 | y = 3 × 4⁴ = 768

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5 | y = 3 × 5⁴ = 1875

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Therefore ,

Q = { 243 , 768 , 1875 }

Cardinal number of Q= n(Q) = 3

I hope this helps you.

: )

Answer 2

heya......

your answer is in attachment. ✌ ✌