1- 100 has 50 odd numbers and 50 even numbers.

Odd probability =50/ 100= 1/2.

(2)

Let k be a natural number, then a number divisible by 3 is represented as 3k.

1 & lt； 3k & lt 100

1/3 & lt； k & lt 100/3

∴ The maximum value of k =33, and the minimum value of k =2.

33-2+ 1=32

∴ 1- 100 There are 32 numbers divisible by 3.

Get the number divisible by 3 =32/ 100=8/25.

(3)

2-33 has an even number of 16.

Get an even number divisible by 3 = 16/ 100=4/25.

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