Q. Quadratic eqn ax 2+ bx + c = 0 has equal roots if
✅ Correct Answer: (C)
b - 4ac = 0
Basic Numerical Skills MCQs and Notes
Q. If the discriminant of a quadratic eqn is zero, the roots are
✅ Correct Answer: (A)
Real and equal
Q. The expression b2 - 4ac is called ………… of the quadratic eqn.
✅ Correct Answer: (A)
Discriminant
Q. ………….. is one of the solutions to the equation 3x2 - 4x+1 =0
✅ Correct Answer: (B)
x = 1
Q. The root of the eqn 3x2 -1 = 0 are ………
✅ Correct Answer: (A)
Irrational
Q. Equation ax2 + b = 0
✅ Correct Answer: (A)
Pure quadratic equation
Q. The equations x2 + 4 =0 is a …………
✅ Correct Answer: (A)
Quadratic equation
Q. When the measure of kurtosis is greater than 3 the distribution is
✅ Correct Answer: (B)
Lepto Kurtic