Basic Probability

A box contains 3 blue beads, 7 red beads, and 6 yellow beads. If one bead is chosen without looking, what is the probability that it is yellow?

• 3 blue beads
• 7 red beads
• 6 yellow beads

Choose the best answer.

• 3/16
• 5/8
• 7/16
• 3/8
• 2/5

A box contains 9 yellow counters, 4 blue counters, and 7 orange counters. If one counter is chosen without looking, what is the probability that it is yellow?

• 9 yellow counters
• 4 blue counters
• 7 orange counters

Choose the best answer.

• 1/5
• 9/20
• 11/20
• 9/19

A box contains 6 orange counters, 7 red counters, and 4 white counters. If one counter is chosen without looking, what is the probability that it is white?

• 6 orange counters
• 7 red counters
• 4 white counters

Choose the best answer.

• 13/17
• 6/17
• 1/4
• 7/17
• 4/17

A box contains 3 purple counters, 2 orange counters, and 1 white counters. If one counter is chosen without looking, what is the probability that it is purple?

• 3 purple counters
• 2 orange counters
• 1 white counters

Choose the best answer.

• 1/3
• 3/6
• 1/2
• 3/5

A box contains 3 blue cards, 8 orange cards, and 5 purple cards. If one card is chosen without looking, what is the probability that it is orange?

• 3 blue cards
• 8 orange cards
• 5 purple cards

Choose the best answer.

• 8/16
• 8/15
• 1/2
• 3/16

A box contains 2 purple stickers, 4 blue stickers, and 7 yellow stickers. If one sticker is chosen without looking, what is the probability that it is purple?

• 2 purple stickers
• 4 blue stickers
• 7 yellow stickers

Choose the best answer.

• 2/13
• 1/6
• 11/13
• 4/13

A box contains 3 yellow beads, 4 black beads, and 4 green beads. If one bead is chosen without looking, what is the probability that it is yellow?

• 3 yellow beads
• 4 black beads
• 4 green beads

Choose the best answer.

• 3/11
• 3/10
• 8/11
• 4/11

A box contains 9 orange cards, 4 black cards, and 4 purple cards. If one card is chosen without looking, what is the probability that it is black?

• 9 orange cards
• 4 black cards
• 4 purple cards

Choose the best answer.

• 9/17
• 1/4
• 4/17
• 13/17

A box contains 5 black tiles, 2 orange tiles, and 6 red tiles. If one tile is chosen without looking, what is the probability that it is orange?

• 5 black tiles
• 2 orange tiles
• 6 red tiles

Choose the best answer.

• 11/13
• 5/13
• 2/13
• 1/6

A box contains 8 yellow beads, 9 black beads, and 3 purple beads. If one bead is chosen without looking, what is the probability that it is black?

• 8 yellow beads
• 9 black beads
• 3 purple beads

Choose the best answer.

• 9/19
• 2/5
• 9/20
• 11/20

A box contains 4 orange tokens, 9 green tokens, and 2 blue tokens. If one token is chosen without looking, what is the probability that it is orange?

• 4 orange tokens
• 9 green tokens
• 2 blue tokens

Choose the best answer.

• 11/15
• 2/7
• 3/5
• 4/15

A box contains 9 blue tokens, 6 yellow tokens, and 1 orange tokens. If one token is chosen without looking, what is the probability that it is orange?

• 9 blue tokens
• 6 yellow tokens
• 1 orange tokens

Choose the best answer.

• 3/8
• 15/16
• 9/16
• 1/15
• 1/16

A box contains 9 white counters, 2 yellow counters, and 5 blue counters. If one counter is chosen without looking, what is the probability that it is blue?

• 9 white counters
• 2 yellow counters
• 5 blue counters

Choose the best answer.

• 9/16
• 1/8
• 1/3
• 5/16
• 11/16

A box contains 2 green tiles, 7 purple tiles, and 8 blue tiles. If one tile is chosen without looking, what is the probability that it is green?

• 2 green tiles
• 7 purple tiles
• 8 blue tiles

Choose the best answer.

• 7/17
• 1/8
• 15/17
• 2/17

A box contains 3 red tiles, 3 blue tiles, and 8 white tiles. If one tile is chosen without looking, what is the probability that it is red?

• 3 red tiles
• 3 blue tiles
• 8 white tiles

Choose the best answer.

• 3/13
• Cannot be determined
• 3/14
• 11/14