Question

Given A= { 3,5,7,...,99}.How many elements are there in the set A?

Answer 1

Có 49 phần tử

 

Answer 2

A number of elements are:

(99-3) : 2 + 1 = 49 ( elements)

So in A 49 elements.

Answer 3

49 phần tử

Answer 4

We have the recipe to calculate the elements in a set is:

(the final-the firstly):the distance of two adjacent numbers+1

lean to the recipe we have:

(99-3) : 2 + 1=49 (elements)

so A has 49 Elements