1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
The value of $$1\,.\,1! + 2\,.\,2! + 3\,.\,3! + \,...\, + \,n\,.\,n!$$ is
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
The number of triangles which can be formed by using the vertices of a regular polygon of $$(n+3)$$ sides is 220. Then, $$n$$ is equal to
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
Out of 8 given points, 3 are collinear. How many different straight lines can be drawn by joining any two points from those 8 points?
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
How many numbers greater than 40000 can be formed from the digits 2, 4, 5, 5, 7?
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