Q1) There are 2 yellow beads ,and 2 blue beads in a bag.
a) What is the probability of picking a yellow bead?
b) What is the probability of picking a blue bead?
[ a) P(yellow)=\(\frac{1}{2}\).
b) P(blue)=\(\frac{1}{2}\).
]

Q1) There were 10 blue pens ,and 10 red pens in a tray . Two pens were picked and not replaced. What was the probability they were both blue ?
[ \(\frac{9}{38}\) ]

Q1) There are 10 green sweets ,and some red sweets in a tray . 9 extra red sweets were added. Two sweets were picked at random and not replaced. The probability they were both green was \(\frac{15}{92}\). How many red sweets were there to begin with ?
[ 5 ]

Q2) There are 2 green beads ,and 6 blue beads in a bag.
a) What is the probability of picking a green bead?
b) What is the probability of picking a blue bead?
[ a) P(green)=\(\frac{1}{4}\).
b) P(blue)=\(\frac{3}{4}\).
]

Q2) There were 10 green sweets ,and 6 yellow sweets in a box . Two sweets were picked and not replaced. What was the probability they were both green ?
[ \(\frac{3}{8}\) ]

Q2) There were 4 blue beads ,and some green beads in a bag . Two beads were picked at random and not replaced. The probability they were both blue was \(\frac{1}{13}\). How many green beads were there ?
[ 9 ]

Q3) There are 10 yellow beads ,and 5 blue beads in a bag.
a) What is the probability of picking a yellow bead?
b) What is the probability of picking a blue bead?
[ a) P(yellow)=\(\frac{2}{3}\).
b) P(blue)=\(\frac{1}{3}\).
]

Q3) There were 10 blue pencils ,and 7 red pencils in a box . Two pencils were picked and not replaced. What was the probability they were both blue ?
[ \(\frac{45}{136}\) ]

Q3) There were 5 blue apples ,and some red apples in a tin . Two apples were picked at random and not replaced. The probability they were both blue was \(\frac{2}{9}\). How many red apples were there ?
[ 5 ]

Q4) There are 10 blue beads, 9 are green beads, and 5 are purple beads in a box
a) What is the probability of picking a blue one?
b) What is the probability of picking a green one?
c) What is the probability of picking a purple one?
[ a) P(blue)=\(\frac{5}{12}\).
b) P(green)=\(\frac{3}{8}\).
c) P(purple)=\(\frac{5}{24}\).
]

Q4) There were 10 red sweets ,and 6 purple sweets in a tray . Two sweets were picked and not replaced. What was the probability they were both red ?
[ \(\frac{3}{8}\) ]

Q4) There were 9 purple pens ,and some blue pens in a packet . Two pens were picked at random and not replaced. The probability they were both purple was \(\frac{3}{10}\). How many blue pens were there ?
[ 7 ]

Q5) There are 8 red beads, 8 are yellow beads, and 5 are green beads in a packet
a) What is the probability of picking a red one?
b) What is the probability of picking a yellow one?
c) What is the probability of picking a green one?
[ a) P(red)=\(\frac{8}{21}\).
b) P(yellow)=\(\frac{8}{21}\).
c) P(green)=\(\frac{5}{21}\).
]

Q5) There were 9 purple apples ,and 2 blue apples in a draw . Two apples were picked and not replaced. What was the probability they were both purple ?
[ \(\frac{36}{55}\) ]

Q5) There were 8 yellow pencils ,and some blue pencils in a box . Two pencils were picked at random and not replaced. The probability they were both yellow was \(\frac{4}{13}\). How many blue pencils were there ?
[ 6 ]