Basic Probability

A box contains 7 orange beads, 7 red beads, and 2 black beads. If one bead is chosen without looking, what is the probability that it is black?

• 7 orange beads
• 7 red beads
• 2 black beads

Choose the best answer.

• 1/8
• 7/8
• 7/16
• 2/16
• 2/15

A box contains 4 orange beads, 5 black beads, and 7 green beads. If one bead is chosen without looking, what is the probability that it is green?

• 4 orange beads
• 5 black beads
• 7 green beads

Choose the best answer.

• 7/16
• 5/16
• 7/15
• 9/16
• 1/4

A box contains 9 red beads, 4 purple beads, and 1 white beads. If one bead is chosen without looking, what is the probability that it is white?

• 9 red beads
• 4 purple beads
• 1 white beads

Choose the best answer.

• 9/14
• 1/13
• 2/7
• 13/14
• 1/14

A box contains 5 red tokens, 8 green tokens, and 6 orange tokens. If one token is chosen without looking, what is the probability that it is green?

• 5 red tokens
• 8 green tokens
• 6 orange tokens

Choose the best answer.

• 4/9
• 8/19
• 11/19
• 5/19

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

• 5 orange tiles
• 2 red tiles
• 2 white tiles

Choose the best answer.

• 5/9
• 2/9
• 7/9
• 1/4

A box contains 4 yellow beads, 6 green beads, and 8 purple beads. If one bead is chosen without looking, what is the probability that it is green?

• 4 yellow beads
• 6 green beads
• 8 purple beads

Choose the best answer.

• 6/17
• 2/9
• 2/3
• 6/18
• 1/3

A box contains 4 yellow counters, 7 white counters, and 2 green counters. If one counter is chosen without looking, what is the probability that it is yellow?

• 4 yellow counters
• 7 white counters
• 2 green counters

Choose the best answer.

• 7/13
• 4/13
• 9/13
• 1/3

A box contains 2 white stickers, 6 purple stickers, and 2 black stickers. If one sticker is chosen without looking, what is the probability that it is white?

• 2 white stickers
• 6 purple stickers
• 2 black stickers

Choose the best answer.

• 4/5
• 2/10
• 3/5
• 1/5
• 2/9

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

A box contains 8 white buttons, 5 purple buttons, and 4 orange buttons. If one button is chosen without looking, what is the probability that it is orange?

• 8 white buttons
• 5 purple buttons
• 4 orange buttons

Choose the best answer.

• 4/17
• 13/17
• 5/17
• 8/17
• 1/4

A box contains 5 purple stickers, 3 red stickers, and 6 blue stickers. If one sticker is chosen without looking, what is the probability that it is purple?

• 5 purple stickers
• 3 red stickers
• 6 blue stickers

Choose the best answer.

• 3/14
• 5/14
• 5/13
• 9/14

A box contains 5 red counters, 5 black counters, and 3 green counters. If one counter is chosen without looking, what is the probability that it is green?

• 5 red counters
• 5 black counters
• 3 green counters

Choose the best answer.

• 10/13
• 5/13
• 1/4
• 3/13

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