1
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
Two digits out of 1, 2, 3, 4, 5 are chosen at random and multiplied together. What is the probability that the last digit in the product appears as 0?
A
$\frac{1}{10}$
B
$\frac{1}{5}$
C
$\frac{2}{5}$
D
$\frac{4}{5}$
2
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
The frequency curve (assuming unimodal) corresponding to the data obtained in an experiment is skewed to the left. What conclusion can be drawn from the curve ?
A
Mean > Median > Mode
B
Mean > Mode > Median
C
Median > Mean > Mode
D
Mode > Median > Mean
3
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
The variance of five positive observations is 3.6. If four of the observations are 2, 2, 4, 5 then what is the remaining observation ?
A
4
B
5
C
7
D
9
4
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the arithmetic mean of 50 terms of an AP with first term 4 and common difference 4 ?
A
50
B
51
C
100
D
102
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