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

Expert Teacher provides MCQ Relations and Functions Solutions for CBSE Maths 12 Science through Video Solutions 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 Solution in a narrative video format.

** Question:**

** Let defined as f(x) = x be an identity function. Then, **

** Solution Video in** **English****:**

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

**Question 1** : Let defined as f(x) = 5 be a constant function. Then its range is (View Answer Video)

**Question 2** : Consider given by f(x) = 4x + 3. Find the inverse of f. (View Answer Video)

**Question 3** : The number of binary operations which can be defined 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** : Let A = {1, 2, 3}. Then, number of equivalence relations containing (1, 2) are, (View Answer Video)

**Question 1** : In a group of 400 people, 160 are smokers and non-vegetarian, 100 are smokers and vegetarian and the remaining are non-smokers and vegetarian. The probabilities of getting a special chest disease are 35%, 20% and 10% respectively. A person is chosen from the group at random and is found to be suffering from the disease. What is the probability that the selected person is a smoker and non-vegetarian? What value is reflected in this question? (View Answer Video)

**Question 2** : Three persons A, B and C apply for a job of Manager in a Private company. Chance of their selection (A, B and C) are in the ratio 1:2:4. The probability that A, B, and C can introduce changes to improve profits of company are 0.8, 0.5 and 0.3 respectively, if the changes does not take place, find the probability that is due to the appointment of C. (View Answer Video)

**Question 3** : One card is drawn from a pack of 52 cards. Find the probability of getting a king (View Answer Video)

**Question 4** : P speaks truth in 70% of the cases and Q in 80% of the cases. In what percent of cases are they likely to agree in stating the same fact? (View Answer Video)

**Question 5** : The probabilities of two students A and B coming to the school in time are and respectively. Assuming that the events ' A coming in time ' and

' B coming in time ' are independent. Find the probability of only one. Write of them come in time atleast one advantage of coming to school in time. (View Answer Video)

**Question 1** : Find a vector in the direction of vector which has magnitude 8 unit. (View Answer Video)

**Question 2** : Find the area of the parallelogram whose adjacent sides are determined by the vectors and (View Answer Video)

**Question 3** : Find the sum of the vectors and (View Answer Video)

**Question 4** : L and M are two points with position vectors and respectively. Write the position vectors of a point N which divides the line segment LM in the ratio 2:1 externally. (View Answer Video)

**Question 5** : Find a vector in the direction of that has magnitude 7 units. (View Answer Video)

**Question 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)