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Syllabus

Prove that a cyclic parallelogram is a rectangle.

Every letter of the English alphabet is coded into numbers like A stands for 1, B for 2 and so on.. Decode the letters used in the phrase RESPECT GIVEN IS RESPECT EARNED. Find the probability of each letter used (only once) to form the phrase from the total sum of all the 27 decoded letters

find the mean of first 10 prime numbers

Two coins are tossed simultaneously . Find the probability of getting

(a) two heads

(b) at least one head

(c) no head

(d) at most one head

(a) $\frac{4}{5}$ (b) 1 (c) 0 (d) $\frac{5}{4}$

no . 1 to 12 are put into the bag then find probability of the

(a) prime number

(b) even prime number

(c) even no .

The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. One card is selected from the remaining cards. Find the probability of getting

1. A heart

2. A king

3. A club

4The '10' of hearts

five cards--the ten,jack,queen,king and ace of diamonds, are well-shuffled with their face down.One card i picked up with random.1)what is the probablity that the card is the queen? 2)if the queen is drawn and put aside, what is the probablity that the secondncard is up is (a) an ace? (b) a queen ?

3 of the 6 vertices of a regular hexagon are chosen at random find the probability that the triangle with three vertices is equilateral.

Q. Three coins are tossed simultaneously 200 times with the the following frequencies of different outcomes:OutcomeFrequency3 heads 232 heads 721 head 77no head 28How to find probability of getting:1. three heads 2. at least two heads 3. two heads and one tailhow to write a maths project for icse class ix on planning a delivery route for a postman

(a) $1-\frac{1}{2\left(\sqrt{3}\right)}$ (b) $1-\frac{\mathrm{\pi}}{3\left(\sqrt{3}\right)}$ (c) $1-\frac{\mathrm{\pi}}{2\sqrt{3}}$ (d) $1-\frac{2\mathrm{\pi}}{3\sqrt{3}}$

in a cricket match a batsman hit a boundary 6 times out of 30 balls she plays. find the probablity that she did not hit boundary?

Lead spheres of diameter 6 cm each are dropped into a cylinderical beaker containing some water and are fully submerged. If the diameter of the beaker is 18 cm and water level rises up to 40 cm, find the number of lead spheres dropped into water.

give me chapter wise weightage of all the chapter in maths of sa2 exam..

a class consist of 50 students out of which 30 are girls . the mean of marks scored by girls in a test is 73 & that of the boys is 71 . find the mean score of whole class .

A piggy bank contains hundred 50 p coins,fifty 1 rupee coins,twenty 2 rupee coins &ten 5 rupee coins.If it is equally likely that one of the coins will fall out when the bank is turned upside down,what is the probability that the coin: 1)will be a 50p coin? 2)will not be a 5 rupee coin? 3)which mathematical concept is used in above problem? 4)what is its value? ( pls .... i need the answer today)

in a deck of cards how many red cards are there, how many black, how many aces, jokers, kings, queens and better tell me everything but fast please

The probability of guessing the correct answer to a certain question is X/2 (X by 2). If probabiliy of not guessing the correct answer is 2/3 (2 by 3), then find X.

Please answer the question urgently. My exam is on 20th Thursday.

Thanks

in a lottery,there are 10 prizes and 25 blanks,a ticket is drawn randomly,theprobability of getting a prize is?

2.Find the mode of the data : 12, 14, 23, 15, 14, 16, 22, 17, 14, 45, 29, 48, 14, 16.3.A cube has numerically equal volume and surface area. Find the volume of such cube.What is the probability of getting 53 Sundays in a leap year and in a non leap year?

is a red or a black ball.

Q7. Two dice are thrown simultaneously 500 times. Each time the sum of two numbers appearing on their tops is noted and recorded as given ahead table: Sum 2 3 4 5 6 7 8 9 10 11 12 Frequency 14 30 42 55 72 75 70 53 46 28 15 If the dice are thrown once more, What is the probability of getting a sum i) 3? ii) More than 10? iii) Less than or equal to 5? iv) Between 8 and 12?

Two dice is thrown simultaneously . The probability of getting a multiple of 2 on one die and a multiple of 3 on the other is .

(a) 5/36 (b)5/12 (c)11/36 (d) 1/12

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:3 heads 232 heads 721 head 77no heads 28find the probability of getting( i) 3 heads(ii) at least 2 heads

(iii) two heads and one tailNo. of defective bulbs Frequency

0 400

1 180

2 48

3 41

4 18

5 8

6 3

more than 6 2

One cartoon is selected at random. What is the probability that it has:

a)no defective bulbs.

b)defective bulbs from 2 to 6.

c)defectve bulbs less than 4.

1500 families with 2 children were selected randomly and the following data were recorded:

number of girls in a family: 0 1 2

frequency: 211 814 475

if a family is chosen at random,compute the probability that it has:

1. no girl.

2. 1 girl.

3. 2 girls.

4. at most one girl.

5. more girls than boys.

A and B are the only two outcomes of an event.Probability of P(A)=0.72,then what will be the probability P(B) and why?

chech whether 7/6 can be an empirical probability or not. give reasons.

A die is thrown 1000 times with frequency of outcome 1,2,3,4,5, and 6 as given below

outcome1 2 3 4 5 6Frequency 179 150 157 149 175 190A die is thrown once again. Find the probability of outcome "greater than 3" ?Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg):

4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00

Find the probability that any of these bags chosen at random contains more than 5 kg of flour.

(i) An even number as the sum.

(ii) The sum as a prime number.

(iii) A total of at least 10.

(iv) A doublet of even number.

17 cards numbered 1,2,3........17 are put in a box and mixed thoroughly. One person draws as ard from the box. Find the probability that a number on the card is (i) odd (ii) a prime

_{1, X2,X3....Xn is 72 , Find The Mean Of The Data 3X1,3X2....3XN}A bag contains 4 white balls and some red balls. If the probability of drawing a white ball from the bag is 2/5, find the number of red balls in the bag.

Find the probability of getting:

(a) an even number

(b) an odd number greater than 1. getting 1

(m/n)x^2 + n/m = 1 - 2x

A box contains 50 bolts and 150 nuts. On checking the box ,it was found that half of the bolts and half of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.

which of the following cannot br empirical probability of an event?

a] 4/5

b] 1

c] 0

d] 5/4

Differentiate between exhaustive events and sample space.

How to make a sample space for an experiment.

A number x is chosen at random from the numbers -3.-2,-1,0,1,2,3. Find The probability that [x]<2

A die is thrown 100 times.If the probability of getting an even number is 2/5.how many times an odd number is obtained?

the mean age of 10 students of a class is 15 years. A student of age 14 years leaves the class and in his place age of their teacher is counted. This increased the mean age of group to 16 years. Find the age of the teacher.

two dice are thrown simuntaneously 500 times . each time the sum of two numbers appearing on them is not written

sum frequency

2 14

3 30

4 42

5 55

6 72

7 75

8 70

9 53

10 46

11 28

12 15

find the PROBABILITY of getting a sum

1)more than 10

2)between 8 and 12

some questions asked in probability under the study material under terms related to probability ... is the answers given wrong?? because after viewing the answers still i am getting only 3/5.!!!

plzz.. let me know!!!

(i)A prime number less than 30?

(ii)A multiple of 5 and 7?

(iii)A multiple of 5 or 7?

A box contains 50 bolb and 150 nuB. On cheeking the box, it was found that half of the bolts

and half of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.Q-If the probability of winning a game is 0.4 what is theprobabilityof losing it ?

(i) Three tails:40

(ii) Both tails:90

(iii) One tail:90

(iv) No Tails:80

Find the respective probability of each event

If x is the mean of n observations x

_{1},x_{2},x_{3}......x_{n}.Then sigma^{n}_{i=1}(x_{1}-x) is ??A RECENT SURVEY FOUND THAT THE AGES OF WORKERS IN FACTORY ARE DISTRJBUTED AS

AGE IN YRS 20-29,30-39.40-49,50-59,60 AND ABOVE

NO.OF WORKERS 38,27,86,46,3

IF A PERSON IS SELECTED AT RANDOM FIND THE PROBABILITY THAT THE PERSON IS

1. 40 YRS OR MORE

2.UNDER 40YRS

3.UNDER 60 BUT NOT OVER 39YRS

(A) $\frac{3}{10}$

(B) $\frac{3}{4}$

(C) $\frac{3}{8}$

(D) $\frac{1}{2}$

2) Two cards are drawn successively with replacement for a pack of 52 cards. The probability of drowsing two aces is.

(A) $\frac{1}{169}$

(B) $\frac{1}{221}$

(C) $\frac{1}{265}$

(D) $\frac{4}{663}$

3) In a single throw of two dice, the probability of getting more than 7 is

(A) $\frac{7}{36}$

(B) $\frac{7}{12}$

(C) $\frac{5}{12}$

(D) $\frac{5}{36}$

If a school is selected at random, find the probability that the school is having

(i) minimum fee

(ii) maximum fee

(iii) fee of atmost Rs 1000

(iv) fee between Rs 1000 and Rs 1500

in a hurdle race, a player has to cross 10 hurdles. the probability that he will clear each hurdle is 5/6. what is the probability that he will knock down fewer than 2 hurdle????

11.Two coins are tossed simultaneously 450 times. If we get two heads 80 times, one head 220 times and no head 150 times, then find the probability of getting one or more than one head. Give reasons to your answer also.a coin is tossed 1000 times with the following frequencies:

Head:455, Tail: 545

Compute The Probability for each event

The percentage of marks obtained by a student in examination are given below:

Examination Subjects

I

II

III

IV

V

% Marks

58%

64%

76%

62%

85%

Find the probability that the student gets –

i) a first class in a subject i.e. at least 60% marks.

ii) A distinction in a subject i.e. at least 75% or above.

iii) Marks between 70% and 80% in a subject.

multiple of 3 on the other is?

outcome= 1 2 3 4 5 6

frequency=89 75 78 73 88 97

find the probability of having an outcome:

1. number > 4

2. number< 4

3. number between 1 and 3

From numbers 3, 5, 5, 7, 7, 7, 9, 9, 9, 9 one number is selected at random. The probability