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 IMPORTANT PYTHON PROGRAMS FOR CLASS 11th

1. 
""" Program to Calculate Simple Interest """ 

 p = eval(input("Enter Principle? "))
r = eval(input("Enter Rate? "))
t = eval(input("Enter Time? "))
si = p *r * t/100
print("Simple interest = ", si) 

2. 
"""  Program to Calculate Compound Interest """ 

 p = eval(input("Enter Principle? "))
r = eval(input("Enter Rate? "))
t = eval(input("Enter Time? "))
A = p * (1 + r/100) ** t
CI = A - p
print("compund interest = ", CI) 

3.  
""" Area of Triangle""" 

 import math
a = eval(input("Enter first side? "))
b = eval(input("Enter second side? "))
c = eval(input("Enter third side? "))
s = (a + b + c) / 2
area = math.sqrt(s *(s-a)*(s-b)*(s-c)) 
print("Area = ", area)
4.
"""To check number is even or odd"""
num = eval(input("Enter any number ?"))
if num % 2 == 0:
        print ("EVEN NUMBER...")
else:
        print ("ODD NUMBER...")

5.  
"""Checking Divisibility """ 

 a = eval(input("Enter first number? "))
b = eval(input("Enter second number? "))
if a % b == 0:
    print (a, " is divisible by ", b)
else:
    print (a, " is NOT divisible by ", b)

 6.  
"""Roots of a Quadratic Equation""" 

 import math as m
a = eval(input("Enter value for a ?"))
b = eval(input("Enter value for b ?"))
c = eval(input("Enter value for c ?"))
d = b ** 2 - 4 * a * c
if d >=0:
    r1 = (-b + m.sqrt(d))/ (2 * a)
    r2 = (-b - m.sqrt(d))/ (2 * a)
    print("Root1 = ", r1, "\nRoot2 = ", r2)
else:
    print("Root are imaginary")

 7.  
"""Calculating grades on total marks""" 

 tot_marks = eval(input("enter total marks obtained by student ? "))
percent = tot_marks / 5
if percent >= 90:
        grade = "A"
elif percent >= 75:
        grade = "B"
elif percent >= 60:
        grade = "C"
else:
        grade = "D"
print ("your percentage is ", percent, "and grade is : ", grade)

8.  
"""Calculating income Tax""" 

 gs = eval(input("Enter gross salary : ?"))
if gs<=100000:
    it = 0
elif gs <=500000:
    it = (gs - 100000) * 10/100
elif gs <=1000000:
    it = 10000 + (gs - 500000) * 20/100
else: 
    it =  25000 + (gs - 1000000) * 30/100
print("Income tax to be paid = ", it) 

 9. 
"""Maximum of 3 numbers""" 

 a = eval(input("Enter value for a ?"))
b = eval(input("Enter value for b ?"))
c = eval(input("Enter value for c ?"))
if a>b:
     if a>c:
        max = a
     else
        max = c
else:
     if b>c:
        max = b
     else:
        max = c
print("Maximum = ", max)   

10.  
"""Finding absolute value """ 

 num = eval(input("Enter any number :"))
num1 = num
if num < 0 :
    num1 = -1 * num      # we can also write it as num1 = -num
print("Absolute value of ", num, "is = ", num1) 

 11.  
"""Printing even numbers between 1 to N"""

x = 2
N = eval(input("Enter the limit N? "))
while x <=N:
    print(x)
    x += 2 
12. 
"""Sum of Digits for a given number"""
Sum = 0; Rem=0
num = eval(input("Enter any number "))
while num > 0:
      Rem = num % 10
      Sum = Sum  + Rem
      num = num //10
print("Sum of digits = ", Sum)

 13.  
"""Reverse of a number""" 

rev = 0; Rem=0
num = eval(input("Enter any number "))
while num > 0:
      Rem = num % 10
      rev = (rev * 10) + Rem
      num = num //10
print("Reverse of the given number = ", rev)

 14.  
"""Factorial of a given number""" 

x = 1; fact = 1
N = eval(input("Enter the number N? "))
while x <=N:
    fact = fact * x
    x += 1
print("Factorial  of  ", N, "  = ", fact) 

 15.  
"""Print Fibonacci series upto N terms """ 

a = 0; b=1; count = 2
N = eval(input("Enter number of terms to be printed"))
print ("Fibonacci series upto ", N, "terms are : ",a ,b, end = ' ')
while count < N:
       c = a + b;
       print(c, end = ' ')
       a= b;
       b = c
       count= count + 1 

 16.  
"""Factorial of a given number""" 

N = eval(input("Enter any number :"))
fact = 1
for i in range(N, 1, -1):
    fact = fact * i
   
print("Factorial of ", N, " = ", fact)     

 17. 
"""To check the given number is prime or NOT? """ 

flag = 1
N = eval (input("Enter any number : "))
for i in range(2, N):
    if ( N % i == 0):
        flag = 0
   
if(flag == 0):       
    print("Number", N, "is NOT Prime")
else:
    print("Number", N, "is Prime")

 18. 
#Program to Sort 3 Numbers in ascending order 

a = eval(input("Enter value for a ?"))
b = eval(input("Enter value for b ?"))
c = eval(input("Enter value for c ?"))
if a<b :
    if a < c:
        if b<=c:
            print ("Numbers in ascending order are = ", a, b, c)
        else:
            print ("Numbers in ascending order are = ", a, c, b)
    else:
         
        print ("Numbers in ascending order are = ", c, a, b)
else:
    if b < c:
        if a<=c:
            print ("Numbers in ascending order are = ", b, a, c)
        else:
            print ("Numbers in ascending order are = ", b, c, a)
    else:
            print ("Numbers in ascending order are = ", c, b, a)

19.  
"""To Sum first N terms of the series 2/5 + 4/10 + 6/15 + 8/20 +... + N terms""" 

N = eval(input("Input number of terms to be sum : "))
num = 2
den = 5
sum = 0
for i in range(1, N+1):
     sum = sum + num/den
     num = num + 2
     den = den + 5
print("sum of first ", N , "terms = ", sum)
 
            OR 
N = eval(input("Input number of terms to be sum : "))
sum = 0
for i in range(1, N+1):
     sum = sum + (2*i)/(5*i)
print("sum of first ", N , "terms = ", sum) 

 20.  
"""Calculating compound interest using loop""" 

P = eval(input("Enter value for Principle :"))
R = eval(input("Enter value for rate :"))
T = eval(input("Enter value for Time(in years) :"))
si = 0; ci = 0; amt = 0
amt = P;
for t in range(1, T+1):
    si = amt * R * 1/100
    amt = amt + si;
ci = amt - P
print("Compound Interest = ", ci) 

21.  
"""Multiplication table""" 

N = eval(input("Enter any number :"))
fact = 1
print("Multiplication table of ", N, "is : \n")
for i in range(1, 11):
   print(N , " X", i, "= ", N*i) 

 22.  
"""Pattern 
   1 
   12 
   123 
   1234 
   12345"""  

for i in range(1, 6):
    for j in range(1,i+1):
       print(j, end = ' ')
    print() 

 23. 
"""Pattern 
   1 
   22 
   333 
   4444 
   55555"""  

for i in range(1, 6):
    for j in range(1,i+1):
       print(i, end = ' ')
    print() 

 24.  
"""Pattern 
   ***** 
   **** 
   *** 
   ** 
   * """  

for i in range(5, 0, -1):
    for j in range(i,0, -1):
       print("*", end = ' ')
    print()
   
25. 
"""Pattern 
           * 
          * * 
         * * * 
        * * * * 
       * * * * * """  

for i in range(1, 6):
    for k in range(10, i, -1):
        print(' ', end = '')
    for j in range(1,i+1):
       print("* ", end = '')
    print()

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