Question

A box contains 13 red blocks, 8 orange blocks,9 green blocks,and 10 blue blocks . Shelly randomly chooses a block from the box. 

What is the probability that the block will not be green ? write answer as decimal

Answer 1

Before we find the total number of blocks 13+8+9+10=40 blocks

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chance of having the green block 13+8+10/40

31/40=0.775 present as Take it easy

Answer 2

`13\ red+8\ orange+9\ green+10\ blue=40\ all\ blocks\\\\`