Q1) There are 5 red beads ,and 2 yellow beads in a bag.
a) What is the probability of picking a red bead?
b) What is the probability of picking a yellow bead?
[ a) P(red)=\(\frac{5}{7}\).
b) P(yellow)=\(\frac{2}{7}\).
]

Q1) There were 7 red pens ,and 7 green pens in a box . Two pens were picked and not replaced. What was the probability they were both red ?
[ \(\frac{3}{13}\) ]

Q1) There were 7 yellow beads ,and some green beads in a bag . Two beads were picked at random and not replaced. The probability they were both yellow was \(\frac{21}{136}\). How many green beads were there ?
[ 10 ]

Q2) There are 8 purple sweets, 2 are yellow sweets, and 2 are green sweets in a tin
a) What is the probability of picking a purple one?
b) What is the probability of picking a yellow one?
c) What is the probability of picking a green one?
[ a) P(purple)=\(\frac{2}{3}\).
b) P(yellow)=\(\frac{1}{6}\).
c) P(green)=\(\frac{1}{6}\).
]

Q2) There were 8 blue pencils ,and 5 red pencils in a draw . Two pencils were picked and not replaced. What was the probability they were both blue ?
[ \(\frac{14}{39}\) ]

Q2) There are 8 purple pens ,and some red pens in a tin . 9 extra red pens were added. Two pens were picked at random and not replaced. The probability they were both purple was \(\frac{2}{15}\). How many red pens were there to begin with ?
[ 4 ]

Q3) There are 7 red beads ,and 2 purple beads in a bag.
a) What is the probability of picking a red bead?
b) What is the probability of picking a purple bead?
[ a) P(red)=\(\frac{7}{9}\).
b) P(purple)=\(\frac{2}{9}\).
]

Q3) There were 8 green sweets ,and 7 blue sweets in a packet . Two sweets were picked and not replaced. What was the probability they were both green ?
[ \(\frac{4}{15}\) ]

Q3) There are 9 green pens ,and some yellow pens in a box . 2 extra yellow pens were added. Two pens were picked at random and not replaced. The probability they were both green was \(\frac{6}{13}\). How many yellow pens were there to begin with ?
[ 2 ]

Q4) There are 8 purple beads, 2 are red beads, and 9 are blue beads in a packet
a) What is the probability of picking a purple one?
b) What is the probability of picking a red one?
c) What is the probability of picking a blue one?
[ a) P(purple)=\(\frac{8}{19}\).
b) P(red)=\(\frac{2}{19}\).
c) P(blue)=\(\frac{9}{19}\).
]

Q4) There were 9 purple pencils ,and 5 blue pencils in a draw . Two pencils were picked and not replaced. What was the probability they were both purple ?
[ \(\frac{36}{91}\) ]

Q4) There were 5 yellow sweets ,and some purple sweets in a tray . Two sweets were picked at random and not replaced. The probability they were both yellow was \(\frac{10}{21}\). How many purple sweets were there ?
[ 2 ]

Q5) There are 7 yellow beads ,and 9 red beads in a bag.
a) What is the probability of picking a yellow bead?
b) What is the probability of picking a red bead?
[ a) P(yellow)=\(\frac{7}{16}\).
b) P(red)=\(\frac{9}{16}\).
]

Q5) There were 10 purple beads ,and 2 yellow beads in a box . Two beads were picked and not replaced. What was the probability they were both purple ?
[ \(\frac{15}{22}\) ]

Q5) There are 4 green apples ,and some yellow apples in a draw . 5 extra yellow apples were added. Two apples were picked at random and not replaced. The probability they were both green was \(\frac{1}{13}\). How many yellow apples were there to begin with ?
[ 4 ]