A stack of index cards is numbered 1 to 50, and then shuffled and put into a box. What is the probability that 4 will be a factor of a card drawn from the box?

Question

Mathematics

Jonah Gibson

2 December, 05:55

A stack of index cards is numbered 1 to 50, and then shuffled and put into a box. What is the probability that 4 will be a factor of a card drawn from the box?

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Lola Walls · Answer 1

You have a 24% chance of drawing a card that has 4 as a factor.

From 1 to 50, there are 12 numbers that have 4 as a factor.

They are: 4 8 12 16 20 24 28 32 36 40 44 48

So our chance is 12/50 or 24%,