# Jambmaths

Maths Question
Question 49

X and Y are two events. The probability of X or Y is 0.7 and the probability of X is 0.4. If X and Y are independent. Find the probability of Y

Question 50

If U ={x: x is an integer and 1≤ x ≤ 20}

E1 = {x: x is a multiple of 3}

E2 = {x: x is a multiple of 4}

and an integer is picked at random from U,  find the probability that it is not in E2

Question 42

Teams P and Q are involved in a game of football. What is the probability that the game ends in a draw?

Question 46
 Colour Blue Black Yellow White Brown No of beads 1 2 4 5 3

The distribution of colour of beads in a bowl is given above. What is the probability that a bead selected at random will be blue or white.

Question 43

The venn diagram below shows the number of students offering Music and History in a class. What is the probability that he offers Music only

Question 45

The probability of a students passing any examination is $\tfrac{2}{3}$. If the student takes three examination. What is the probability that he will not pass any of them

Question 44

Two dice are thrown. What is the probability that the sum of the number is divisible by 3

Question 17

Some white balls were put in a basket containing twelve red balls and sixteen black balls. If the probability of picking a white ball from the basket is $\tfrac{3}{7}$, how many white balls were introduced.

Question 20

The unbiased die is rolled 100 times and the outcome is tabulated as follows

 Number 1 2 3 4 5 6 Frequency 13 15 22 14 20 16

What is probability of obtaining 5?

Question 24

A container  has 30 gold medals, 22 silver medals and 18 bronze medals. If one medal is selected at random from the container, what is the probability that it is not gold?

Question 19

Three boys shard some oranges. The first received $\tfrac{1}{3}$of the oranges and second received $\tfrac{2}{3}$ of the remainder. If the third boy received the remaining 12 oranges, how many oranges did they share?

Question 32

A box contains 5blue balls, 3 red balls and 2 white balls. Two balls were selected from the box with replacement. Find the probability of obtaining two blue or two red balls

Question 35

What is the probability that an integer x $(1\le x\le 20)$chosen at random is divisible by both 2 and 3

Question 20

A bag contains 5 blacks, 4 white and x red marble. If the probability of picking a red marble is $\tfrac{2}{5}$, find the value of x

Question 21
 GSM Operator GTN PLO QTEL CMob No of Recharge card 5 6 3 6

The table above shows major GSM operator. What is the probability that a recharge selected at random will be GTN or Qtel

Question 49

In a basket, there are 6 grapes, 11 bananas and 13 oranges. If one fruit is chosen at random, what is the probability that the fruit is either a grape or a banana?

Question 50
 Age in years 10 11 12 No. of pupil 6 27 7

The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old.

Question 49

The probability of picking a letter T from the word OBSTRUCTION is

Question 50

The result of rolling a fair die 150 times is as summarized in the table below

 Number 1 2 3 4 5 6 Frequency 12 18 x 30 2x 45

What is the probability of obtaining a 5?

Question 49

The probability of a student passing any examination is $\tfrac{2}{3}$.If the student takes three examinations. What is the probability that he will not pass any of them?

Question 50
 Mark 2 3 4 5 6 7 8 9 No of student 3 4 1 0 4 5 2 1

The table above shows the distribution of marks in a test. Find the probability of passing the test if the pass mark is 5

Question 50

If three unbiased coin are tossed, find the probability that they are all heads

Question 49

Find the probability that a number picked at random from the set {43, 44, 45, - , -, -, 60} is a prime number

Question 50

In a class of 60 students, 30 offers physics and 40 offers chemistry. If a students is picked at random from the class, what is the probability that the student offer both physics and Chemistry?

Question 49

The probability that a student passes a physics test$\frac{2}{3}$. If he takes three physics test, what is the probability that he passes two of the tests?

Question 50

The probabilities that a man and his wife live for 80 years are $\tfrac{2}{3}$and $\tfrac{3}{5}$respectively. Find the probability that at least one of them will live up to 80 years

Question 49

\begin{align} & \text{What is the probability that an integer }x\text{ (1}\le \text{x}\le \text{25) chosen at random is divisible by both 2 and 3} \\ & \text{(A) }\tfrac{3}{4}\text{ (B) }\tfrac{1}{25}\text{ (C) }\tfrac{1}{5}\text{ (D) }\tfrac{4}{25} \\\end{align}

Question 50

A basket contains 9 apples, 8 bananas and 7 oranges. A fruit is picked from the basket, find the probability that it is neither an apple nor an orange

Question 49
 Numbers 1 2 3 4 5 6 Frequency 18 22 20 16 10 14

The table above represent the outcome of throwing a die 100 times. What is the probability of obtaining at least a 4

Question 50

A number is chosen at random from 10 to 30 inclusive, what is the probability that the number is divisible by 3

Question 44

Two fair dice are thrown at once. What is the probability of getting same face

Question 48

A card is picked at random from a pack of 52 well shuffled playing cards. Find the probability of NOT picking a red cards in the pack. If there are 13 red card in the pack