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

Expert Teacher provides CBSE 12 Science Answers for MCQ Maths Probability 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 Probability 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:**

** A box contains 50 bolts and 50 nuts. Half of the bolts and nuts are rusted. If two items are drawn with replacement, what is the probability that either both are rusted or both are bolts. **

** 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, Probability

**Question 1** : 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?

**Question 2** : Four cards are drawn successively with replacement from a well shuffled deck of 52 cards. What is the probability that:

All the four cards are spades?

**Question 3** : Probability of solving specific problem independently by A and B are and respectively. If both try to solve the problem, independently, then find the probability that the problem is solved.

**Question 4** : Assume that the chances of a patient having a heart attack are 40%. Assume that a meditation and yoga course reduces the risk of heart attack by 30% and the prescription of certain drugs and certain restrictions reduces the risk by 25%. At a time, a patient choses only one of the two options with equal probabilities. After going through one of the two options, the patient is selected at random who is suffering from a heart attack. Find the probability that the patient followed a course of meditation and yoga. Write the value referred here.

**Question 5** : If E and F are two events such that,

, Find P(E or F).

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

### Three Dimensional Geometry

**Question 1** : Write the vector equation of a line passing through the point (1, -1, 2) and parallel to the line whose equations are,

**Question 2** : If a line has the direction ratios -18, 12, -4, then what are its direction cosines?

**Question 3** : Find the distance of the point (-1, -5, -10) from the point of intersection of the line and the plane

**Question 4** : Find the angle between the lines and

**Question 5** : Find the equation of the plane passing through the point (-1, 3, 2) and perpendicular to each of the planes x + 2y + 3z = 5 and 3x + 3y + z = 0.

### Integrals

**Question 1** : Find the integral of the function .

**Question 2** : Write an antiderivative for the function, using the method of inspection.

**Question 3** : Find : .

**Question 4** : Show that :

**Question 5** : Find :

### Relations and Functions

**Question 1** : If and are onto, then is:

**Question 2** : The law a + b = b + a is called ______.

**Question 3** : If the mapping f and g are given by f = {(1, 2), (3, 5), (4, 1)} and g = {(2, 3), (5, 1), (1, 3)}, Find .

**Question 4** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16.

**Question 5** : Functions are defined respectively, by , find .