1
JEE Main 2020 (Online) 8th January Morning Slot
Numerical
+4
-0
Change Language
The least positive value of 'a' for which the equation

2x2 + (a – 10)x + $${{33} \over 2}$$ = 2a has real roots is
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2
JEE Main 2020 (Online) 8th January Morning Slot
Numerical
+4
-0
Out of Syllabus
Change Language
The sum $$\sum\limits_{k = 1}^{20} {\left( {1 + 2 + 3 + ... + k} \right)} $$ is :
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3
JEE Main 2020 (Online) 8th January Morning Slot
Numerical
+4
-0
Out of Syllabus
Change Language
Let the normal at a point P on the curve
y2 – 3x2 + y + 10 = 0 intersect the y-axis at $$\left( {0,{3 \over 2}} \right)$$ .
If m is the slope of the tangent at P to the curve, then |m| is equal to
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4
JEE Main 2020 (Online) 8th January Morning Slot
Numerical
+4
-0
Change Language
An urn contains 5 red marbles, 4 black marbles and 3 white marbles. Then the number of ways in which 4 marbles can be drawn so that at the most three of them are red is ___________.
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