**Akki chauhan**

*-Answered by Akki chauhan* On 27 August 2019:09:27:23 AM

**Question 1.** **Asked on :**25 August 2019:10:39:42 AM

(i) A king of a red colour (ii) A face card

(iii) A red face card (iv) The queen of diamonds.

*-Added by Harshita Rathore* **Mathematics** » **Probability**

**Answer:**

*-Answered by Akki chauhan* On 27 August 2019:09:27:23 AM

**Question 2.** **Asked on :**09 February 2019:04:31:17 PM

What is the range of the probability of an event.

*-Added by Harshita Rathore* **Mathematics** » **Probability**

**Answer:**

If an event is impossible its probability is zero. Similarly, if an event is certain to occur, its probability is one. The probability of any event lies in between these values. It is called the range of probability and is denoted as **0** ≤ P (E) ≤ 1.

*-Answered by Himanshi Verma* On 09 February 2019:04:32:27 PM

**Question 3.** **Asked on :**13 January 2019:01:13:28 PM

Find the median of11,12,2x+2,3x,21,23 where x is the mean of 5,10,3.

*-Added by Akki chauhan* **Mathematics** » **Probability**

**Answer:**

We know,

if the number of observation (n) is even

then,

1. first of all find the value at the position

2. and find the value at the position

3. now find the average of two value to get the median .

e.g.,

Given, 11, 12, 14, 18, (x + 2), (x + 4) , 30, 32 , 35 , 41 are in ascending order .

number of terms = 10 {even}

so, median = {(n/2)th + (n/2 + 1) th }/2

24 = (5th + 6th)/2

24 = {(x + 2) + (x + 4)}/2

24 = (x + 3)

x = 21

hence, x = 21

*-Answered by Master Purushottam* On 23 August 2019:11:36:15 PM

**Question 4.** **Asked on :**13 January 2019:12:42:04 PM

Fill in the blanks :

(i) The probability of an impossible event is .............

(ii) The probability of happening of a possible event is always lies between ........... and...........

(iii) On tossing a coin, We get a total of ............. outcomes.

*-Added by Akki chauhan* **Mathematics** » **Probability**

**Answer:**

Ans 1. Zero(0)

Ans 2. 0 and 1

Ans 3. 2

*-Answered by Master Purushottam* On 23 August 2019:11:36:37 PM

**Question 5.** **Asked on :**13 January 2019:11:53:09 AM

A bag contain slips bearing from 1-89. A slip is drawn at random from the bag. Find the probability that the slip drawn has:

(a) A number written on it such that sum of its digit is 11.

(b) A number greater than 63 written on it.

*-Added by Akki chauhan* **Mathematics** » **Probability**

**Answer:**

Let 'x' be the number of boys and 'y' be the number of girls.

To find the total marks

The total marks of boys = 42x

The total marks of girls = 45y

Total number of boys and girls = x + y

To find the ratio

The total marks of boys and girls = 44(x + y)

Then we can write

44(x + y) = 42x + 45y

44x + 44y = 42x + 45y

2x = y

x/y = 1/2

Therefore the ratio of the number of boys to the number of girls is 1:2

*-Answered by Master Purushottam* On 23 August 2019:11:37:23 PM

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