Basic Probability

There are 4 black marbles and 2 blue marbles in a bag. One marble is selected at random. What is the probability of NOT selecting a black marble?

• 4 black marbles
• 2 blue marbles

Choose the best answer.

• 33.3%
• 2/5
• 1/3
• 3
• 2/3

There are 12 green buttons and 6 orange buttons in a bag. One button is selected at random. What is the probability of NOT selecting a green button?

• 12 green buttons
• 6 orange buttons

Choose the best answer.

• 33.3%
• 3
• 6/17
• 1/3
• 2/3

There are 4 green tiles and 5 yellow tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a yellow tile?

• 4 green tiles
• 5 yellow tiles

Choose the best answer.

• 5/9
• 44.4%
• 4/9
• 9/4
• 1/2

There are 10 orange tiles and 6 yellow tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a yellow tile?

• 10 orange tiles
• 6 yellow tiles

Choose the best answer.

• 3/8
• 62.5%
• 8/5
• 5/8
• 2/3

There are 12 white buttons and 2 red buttons in a bag. One button is selected at random. What is the probability of NOT selecting a red button?

• 12 white buttons
• 2 red buttons

Choose the best answer.

• 12/13
• 6/7
• 1/7
• 85.7%
• 7/6

There are 4 yellow tiles and 4 green tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a yellow tile?

• 4 yellow tiles
• 4 green tiles

Choose the best answer.

• 2
• 1/2
• 50%
• 4/7

There are 7 yellow counters and 3 red counters in a bag. One counter is selected at random. What is the probability of NOT selecting a yellow counter?

• 7 yellow counters
• 3 red counters

Choose the best answer.

• 3/10
• 7/10
• 10/3
• 30%
• 1/3

There are 9 black counters and 9 red counters in a bag. One counter is selected at random. What is the probability of NOT selecting a black counter?

• 9 black counters
• 9 red counters

Choose the best answer.

• 1/2
• 50%
• 9/17
• 2

There are 9 orange tiles and 5 yellow tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a orange tile?

• 9 orange tiles
• 5 yellow tiles

Choose the best answer.

• 5/13
• 35.7%
• 9/14
• 14/5
• 5/14

There are 11 purple buttons and 5 red buttons in a bag. One button is selected at random. What is the probability of NOT selecting a purple button?

• 11 purple buttons
• 5 red buttons

Choose the best answer.

• 5/16
• 1/3
• 16/5
• 11/16
• 31.2%

There are 11 orange stickers and 9 purple stickers in a bag. One sticker is selected at random. What is the probability of NOT selecting a orange sticker?

• 11 orange stickers
• 9 purple stickers

Choose the best answer.

• 9/19
• 9/20
• 11/20
• 20/9
• 45%

There are 6 purple cards and 6 black cards in a bag. One card is selected at random. What is the probability of NOT selecting a black card?

• 6 purple cards
• 6 black cards

Choose the best answer.

• 2
• 6/11
• 50%
• 1/2

There are 8 white tiles and 10 green tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a white tile?

• 8 white tiles
• 10 green tiles

Choose the best answer.

• 10/17
• 55.6%
• 5/9
• 9/5
• 4/9