Question

Find the cardinal number of the set

R= { x: x is an integers, x is equal to z and – 5 ≤ x < 5}.​

Answer 1

Answer:

Cardinal number : The number of elements in set is it's cardinal number.

Set : Collection of well defined objects.

Integers : The collection of whole numbers along with negative numbers

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Given,

x ∈ Z and –5 ≤ x <5

So, x = -5 , -4 , -3 , -2 , -1 , 0 , 1 , 2 , 3 , 4

Set R = { -5 , -4 , -3 , -2 , -1 , 0 , 1 , 2 , 3 , 4 }

n(R ) = 10 .

Therefore, The cardinal number of the set R is 10

Answer 2

Answer:

|R|=10

Step-by-step explanation:

R={-5≤x<5;x∈Z}

∴R={-5,-4,-3,-2,-1,0,1,2,3,4}

∴|R|=10