1
JEE Main 2020 (Online) 5th September Morning Slot
+4
-1
The product of the roots of the
equation 9x2 - 18|x| + 5 = 0 is :
A
$${{5} \over {9}}$$
B
$${{5} \over {27}}$$
C
$${{25} \over {81}}$$
D
$${{25} \over {9}}$$
2
JEE Main 2020 (Online) 4th September Evening Slot
+4
-1
Let $$\lambda \ne 0$$ be in R. If $$\alpha$$ and $$\beta$$ are the roots of the
equation, x2 - x + 2$$\lambda$$ = 0 and $$\alpha$$ and $$\gamma$$ are the roots of
the equation, $$3{x^2} - 10x + 27\lambda = 0$$, then $${{\beta \gamma } \over \lambda }$$ is equal to:
A
36
B
9
C
27
D
18
3
JEE Main 2020 (Online) 4th September Morning Slot
+4
-1
Let [t] denote the greatest integer $$\le$$ t. Then the equation in x,
[x]2 + 2[x+2] - 7 = 0 has :
A
no integral solution.
B
exactly two solutions.
C
exactly four integral solutions.
D
infinitely many solutions.
4
JEE Main 2020 (Online) 4th September Morning Slot
+4
-1
Let $$\alpha$$ and $$\beta$$ be the roots of x2 - 3x + p=0 and $$\gamma$$ and $$\delta$$ be the roots of x2 - 6x + q = 0. If $$\alpha, \beta, \gamma, \delta$$ form a geometric progression.Then ratio (2q + p) : (2q - p) is:
A
9 : 7
B
5 : 3
C
3 : 1
D
33 :31
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