diff --git a/mathgenerator/mathgen.py b/mathgenerator/mathgen.py
index a5164a1..d7240fe 100644
--- a/mathgenerator/mathgen.py
+++ b/mathgenerator/mathgen.py
@@ -713,6 +713,29 @@ def fourthAngleOfQuadriFunc(maxAngle = 180):
     problem = f"Fourth angle of quadrilateral with angles {angle1} , {angle2}, {angle3} ="
     solution = angle4
     return problem, solution
+  
+def quadraticEquation(maxVal=100):
+	a = random.randint(1,maxVal)
+	c = random.randint(1,maxVal)
+	b = random.randint(round(math.sqrt(4*a*c))+1,round(math.sqrt(4*maxVal*maxVal)))
+	
+	problem = "Zeros of the Quadratic Equation {}x^2+{}x+{}=0".format(a,b,c)
+
+	D = math.sqrt(b*b-4*a*c)
+	
+	solution = str([round((-b+D)/(2*a), 2),round((-b-D)/(2*a), 2)])
+	return problem,solution
+
+
+def hcfFunc(maxVal=20):
+    a = random.randint(1, maxVal)
+    b = random.randint(1, maxVal)
+    x, y = a, b
+    while(y):
+       x, y = y, x % y
+    problem = f"HCF of {a} and {b} = "
+    solution = str(x)
+    return problem, solution
 
 def DiceSumProbFunc(maxDice=3):
     a = random.randint(1,maxDice)
@@ -731,7 +754,7 @@ def DiceSumProbFunc(maxDice=3):
                 for k in [1,2,3,4,5,6]:
                     if i+j+k==b:
                         count=count+1
-    problem = "If {} dices rolled at the same time, Probability of getting a sum of {} =".format(a,b)
+    problem = "If {} dice are rolled at the same time, the probability of getting a sum of {} =".format(a,b)
     solution="{}/{}".format(count, 6**a)
     return problem, solution
 
@@ -790,4 +813,6 @@ matrixMultiplication =  Generator("Multiplication of two matrices", 46, "Multipl
 CubeRoot = Generator("Cube Root",47,"Cuberoot of a upto 2 decimal places is","b",cubeRootFunc)
 powerRuleIntegration = Generator("Power Rule Integration", 48, "nx^m=", "(n/m)x^(m+1)", powerRuleIntegrationFunc)
 fourthAngleOfQuadrilateral = Generator("Fourth Angle of Quadrilateral",49,"Fourth angle of Quadrilateral with angles a,b,c =","angle4",fourthAngleOfQuadriFunc)
-DiceSumProbability=Generator("Probability of a certain sum appearing on faces of dice",50,"If n dices are rolled then probabilty of getting sum of x is =","z", DiceSumProbFunc)
+quadraticEquationSolve = Generator("Quadratic Equation", 50, "Find the zeros {x1,x2} of the quadratic equation ax^2+bx+c=0", "x1,x2", quadraticEquation)
+hcf = Generator("HCF (Highest Common Factor)", 51, "HCF of a and b = ", "c", hcfFunc)
+DiceSumProbability=Generator("Probability of a certain sum appearing on faces of dice", 52,"If n dices are rolled then probabilty of getting sum of x is =","z", DiceSumProbFunc)
\ No newline at end of file