Answers for MCQ CBSE 12 Science Maths Differential Equations in English to enable students to get Answers in a
narrative video format for the specific question.

Expert Teacher provides Answers for MCQ CBSE 12 Science Maths Differential Equations through Video Answers in
English language. This video solution will be useful for students to understand how to write an answer
in exam in order to score more marks. This teacher uses a narrative style for a question from Differential Equations not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** If m and n are the order and degree, respectively of the differential equation then write value of m+n. **

** Answer Video in** **English****:**

You can select video Answers from other languages also. Please check Answers in
(
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## Similar Questions from CBSE, 12th Science, Maths, Differential Equations

**Question 1** : Show that the solution of differential equation :

**Question 2** : Write the degree of the differential equation :

**Question 3** : Write the differential equation representing the family of curves y = mx, where m is an arbitrary constant.

**Question 4** : Find the particular solution of the differential equation :

when x = 1,

**Question 5** : Solve the differential

### Questions from Other Chapters of CBSE, 12th Science, Maths

### Application of Derivatives

**Question 1** : Ifthen the approximate value of f(3.02) is :

**Question 2** : A balloon, which always remains spherical has a variable radius. Find the rate at which its volume is increasing with the radius when the later is 10 cm.

**Question 3** : Sand is pouring from a pipe at the rate of . The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing, when the height is 4 cm?

**Question 4** : The rate of change of the area of a circle with respect to its radius r at r=6cm is:

**Question 5** : Which of the following functions are strictly decreasing on

### Matrices

**Question 1** : Find the value of x from the equation: .

**Question 2** : Find the value of z, if .

**Question 3** : Find the inverse of the matrix, .

**Question 4** : If , write AA^{1}, where A^{1 }is the transpose of **A**?** **

**Question 5** : Find the value of z, from the equation: .

### Probability

**Question 1** : A coin is biased so that the heads is 2 times as likely to occur as tail. If the coin is tossed twice, find the probability distribution of number of tails. Hence find the mean of the distribution.

**Question 2** : Find the mean, the variance and the standard deviation of the number of doublets in three throws of a pair of dice.

**Question 3** : In a game, a man wins rupee five for number six and losses rupee one for any other number, when a fair die is thrown. The man decided to throw a die thrice but to quit as and when he gets a six. Find the expected value of the amount he wins/losses.

**Question 4** : A pair of dice is thrown 4 times. If getting a doublet is considered a success, find the probability distribution of number of successes. Hence, find the mean of the distribution.

**Question 5** : A bag contains 3 red and 7 black balls. 2 balls are selected at random one by one without replacement. If the second selected ball happens to be red, what is the probability that the first selected ball is also red?