1
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
A problem is given to three students A, B and C, whose probabilities of solving the problem independently are $\rm \frac{1}{2}$, $\rm \frac{3}{4}$ and p respectively. If the probability that the problem can be solved is $\rm \frac{29}{32}$, then what is the value of p?
2
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
In a cricket match, a batsman hits a six 8 times out of 60 balls he plays. What is the probability that on a ball played he does not hit a six?
3
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Direction: Consider the following for the next two (02) items that follow.
Two regression lines are given as 3x - 4y + 8 = 0 and 4x - 3y - 1 = 0.
Consider the following statements:
1. The regression line of y on x is $\rm y = \frac{3}{4}x+2$
2. The regression line of x on y is $\rm x = \frac{3}{4}y+\frac{1}{4}$
Which of the above statements is/are correct?
4
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Direction: Consider the following for the next two (02) items that follow.
Two regression lines are given as 3x - 4y + 8 = 0 and 4x - 3y - 1 = 0.
Consider the following statements:
1. The coefficient of correlations r is $\rm \frac{3}{4}$.
2. The means of x and y are 3 and 4 respectively.
Which of the above statements is/are correct?
Paper analysis
Total Questions
Mathematics
120
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