PREVIOUS NEXT
1
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The probability of choosing randomly a number c from the set {1, 2, 3, ... 9} such that the quadratic equation $$x^2+4x+c=0$$ has real roots, is

A
$$\frac{1}{9}$$
B
$$\frac{2}{9}$$
C
$$\frac{3}{9}$$
D
$$\frac{4}{9}$$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Five persons A, B, C, D and E are in queue of a shop. The probability that A and B are always together is

A
$$\frac{2}{5}$$
B
$$\frac{1}{4}$$
C
$$\frac{3}{5}$$
D
$$\frac{2}{3}$$
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fail is

A
0.38
B
0.44
C
0.50
D
0.94
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Three vertices are chosen randomly from the seven vertices of a regular 7-sided polygon. The probability that they form the vertices of an isosceles triangle is

A
$$\frac{1}{7}$$
B
$$\frac{1}{3}$$
C
$$\frac{3}{7}$$
D
$$\frac{3}{5}$$
PREVIOUS NEXT

COMEDK Subjects

Browse all chapters by subject

Physics
Mechanics
Units & Measurements Vector Algebra Motion Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Elasticity Fluid Mechanics Heat and Thermodynamics Gravitation Simple Harmonic Motion Waves
Optics
Ray Optics Wave Optics
Electromagnetism
Electrostatics Current Electricity Capacitor Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves
Modern Physics
Atoms and Nuclei Dual Nature of Radiation Semiconductor Devices and Logic Gates Communication Systems
Chemistry
Physical Chemistry
Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry
Inorganic Chemistry
Chemical Bonding and Molecular Structure s-Block Elements Environmental Chemistry d and f Block Elements Hydrogen and It's Compounds Periodic Table and Periodicity p-Block Elements Coordination Compounds Metallurgy
Organic Chemistry
IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry
Mathematics
Algebra
Sets and Relations Logarithms Complex Numbers Quadratic Equations Sequences and Series Permutations and Combinations Probability Binomial Theorem Vector Algebra Three Dimensional Geometry Matrices and Determinants Statistics Mathematical Reasoning Linear Programming
Trigonometry
Properties of Triangles Trigonometric Ratios & Identities Inverse Trigonometric Functions Trigonometric Equations
Coordinate Geometry
Hyperbola Ellipse Straight Lines and Pair of Straight Lines Circle Parabola
Calculus
Application of Derivatives Differential Equations Indefinite Integration Limits, Continuity and Differentiability Differentiation Functions Definite Integration Area Under The Curves
EXAM MAP

Browse past year questions by exam & subject

Joint Entrance Examination
JEE Main JEE Advanced MHT CET BITSAT COMEDK WB JEE KCET VITEEE AP EAPCET TS EAMCET IAT (IISER)
Medical
NEET AIIMS MHT CET (Biology)
Graduate Aptitude Test in Engineering
GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN GATE Data Science and Artificial Intelligence
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12