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

Expert Teacher provides Maths 12 Science Relations and Functions CBSE Answers for MCQ 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 Relations and Functions 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:**

** Consider given by f(x) = 4x + 3. Find the inverse of f. **

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

You can select video Answers from other languages also. Please check Answers in ( Hindi )

**Question 1** : The identity element for the binary operation * defined by a * b = , where a, b are the elements of a set of non-zero rational numbers, is, (View Answer Video)

**Question 2** : * is a binary operation on Z such that: a * b = a + b + ab. The solution of (3* 4) *x = – 1 is,

(View Answer Video)

**Question 3** : Number of binary sets on the set is, (View Answer Video)

**Question 4** : If f is the greatest integer function and g is the modulus function . Write the value of g o f(-1/3) – f o g ( -1/3 ) . (View Answer Video)

**Question 5** : If and are onto, then is: (View Answer Video)

**Question 1** : Using the method of integration find the area of the region bounded by lines:

2x + y = 4, 3x - 2y = 6 and x - 3y + 5 = 0.

(View Answer Video)

**Question 2** : Using the method of integration, find the area of the region bounded by the lines 3x - 2y + 1 = 0, 2x + 3y -21 = 0 and x - 5y + 9 = 0. (View Answer Video)

**Question 3** : Find the area of smaller region bounded by the ellipse and the line . (View Answer Video)

**Question 4** : Find the area enclosed by the parabola and the line x - y = 4. (View Answer Video)

**Question 5** : Using integration find the area of region bounded by the triangle whose vertices are (-1, 0), (1, 3) and (3, 2). (View Answer Video)

**Question 1** : One card is drawn from a pack of 52 cards. Find the probability of getting a jack of hearts:

(View Answer Video)

**Question 2** : A bag contains (2n+1) coins. It is known that (n-1) of these coins have a head on both sides, whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is , determine the value of n. (View Answer Video)

**Question 3** : A die is thrown 6 times. If 'getting an odd number' is a 'success', what is the probability of obtaining:

atleast 5 successes?

(View Answer Video)

**Question 4** : A speaks truth in 60% of the cases, while B in 90% of cases. In what percent of cases are they likely to contradict each other in stating the same fact? In the cases of contradiction do you think, the statement B will carry more weight as he speaks truth in more number of cases than A? (View Answer Video)

**Question 5** : One card is drawn from a pack of 52 cards. Find the probability of getting a black face card: (View Answer Video)

**Question 1** : Find : (View Answer Video)

**Question 2** : Evaluate : (View Answer Video)

**Question 3** : (View Answer Video)

**Question 4** : Evaluate : (View Answer Video)

**Question 5** : Evaluate : (View Answer Video)