Basic Probability

A box contains 2 blue marbles, 5 black marbles, and 2 orange marbles. If one marble is chosen without looking, what is the probability that it is blue?

• 2 blue marbles
• 5 black marbles
• 2 orange marbles

Choose the best answer.

• 7/9
• 5/9
• 2/9
• 1/4

A box contains 5 red tokens, 5 purple tokens, and 1 orange tokens. If one token is chosen without looking, what is the probability that it is orange?

• 5 red tokens
• 5 purple tokens
• 1 orange tokens

Choose the best answer.

• 1/11
• 5/11
• 1/10
• 10/11

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

• 4 purple cards
• 9 blue cards
• 4 white cards

Choose the best answer.

• 8/17
• 9/16
• 9/17
• 4/17

A box contains 2 purple tiles, 4 white tiles, and 7 green tiles. If one tile is chosen without looking, what is the probability that it is white?

• 2 purple tiles
• 4 white tiles
• 7 green tiles

Choose the best answer.

• 9/13
• 2/13
• 4/13
• 1/3

A box contains 8 orange counters, 9 green counters, and 1 yellow counters. If one counter is chosen without looking, what is the probability that it is yellow?

• 8 orange counters
• 9 green counters
• 1 yellow counters

Choose the best answer.

• 4/9
• 1/17
• 17/18
• 1/2
• 1/18

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