1) What is Probability? a) How likely something is to happen b) Possible , impossible c) Maybe true , maybe false d) Maybe yes , maybe no 2) What is the formula to find Probability? a) The number of ways an event can occur - The total number of possible outcomes b) The number of ways an event can occur + The total number of possible outcomes c) The number of ways an event can occur ÷ The total number of possible outcomes d) The number of ways an event can occur x The total number of possible outcomesmber of desired outcomes x total number of outcomes 3) There are 4 red pen and 6 blue pen. What the probability of getting all the blue pen? a) 6/10 b) 4/10 c) 4/6 d) 6/4 4) There are 20 students in the school. Only 4 of them are girls, and others is boy. Find the pobability of all the girl getting pick away. a) 16/4 b) 20/4 c) 4/16 d) 4/20 5) Max tested a coin to see whether it was fair. The picture shows the results of his coin toss experiment. What is the relative frequency of the coin landing on heads? a) 26/67 b) 1/2 c) 26/41 d) 26/100 6) Ifan rolls a fair dice, with sides labelled A, B, C, D, E and F. What is the probability that the dice lands on a vowel? a) 1/2 b) 1/6 c) 1/3 d) 2/3 7) There are 10 student in Year 7. 3 of them like Science class and 3 of them like ICT class. Find the probability of the student that like Art Class. a) 6/10 b) 4/10 c) 3/10 d) 2/10 8) A restaurant offers the a lists of menu. How many possible different combinations of starter, main and dessert are there? a) 7 b) 12 c) 8 d) 27 9) Rachel flip a coin. The probability that she get heads is 0.16. What is the probability that she get tails? a) 1.16 b) 6.25 c) 1 d) 0.84 10) A coin is tossed three times. Work out the probability of getting two heads and one tail. a) 3/8 b) 1/8 c) 1/2 d) 1/6 11) Sam asked 50 people whether they like vegetable pizza or pepperoni pizza. Sam picked one of the 50 people at random. Given that the person he chose likes pepperoni pizza, find the probability that they don’t like vegetable pizza. a) 12/50 b) 10/35 c) 3/50 d) 12/35 12) There are 3 red balls and 7 blue balls in a bag. What is the probability of choosing a red ball when you select one at random? a) 3/10 b) 0 c) 3/7 d) 7/10 13) Which of these cannot be probabilities? a) 8/7 b) 1/3 c) 2/6 d) 5/6 14) The probability of team A winning is 0.46. What is the pobability of team B winning? a) 0.40 b) 0.50 c) 0.56 d) 0.57 15) There is 4 cake on the table. John has the probability of 0.25 eating 1 cake on the table. Find the probability of John eating 3 cakes. a) 0.50 b) 1 c) 0.25 d) 0.75 16) We know that a leap year has 366 days. Find the probability of a leap year having 53 Sundays? a) 1/14 b) 2/7 c) 1/7 d) 0 17) A number is chosen at random from 1 to 50. Find the probability that the number chosen is divisible by 2 as well as 5. a) 1/10 b) 3/10 c) 1/5 d) 4/5 18) In a carton of mangoes, the probability of a mango being rotten is 0.2. If 5 mangoes were rotten, find the total number of mangoes in the carton. a) 100 b) 50 c) 25 d) 20 19) The probability of rolling a die and getting a 7 as an outcome has a probability ___. a) 1/6 b) 1 c) 1/7 d) 0 20) The baker has a pThere are 15 different toys in a toybox, how many different sets of three toys are possible?obability of 0.82 to bake the cake successfully. Find the pobability of the baker failing three times to bake a cake. a) 455 b) 45 c) 153 d) 18

Year 7 Math Games #3

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