Page 496 - AI Ver 3.0 class 10_Flipbook
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15.  Write a program to input a number and display whether it is a prime number or not.

               Ans.  [1]:  num = int(input("Enter a number: "))
                           if num > 1:
                               for i in range(2, int(num / 2) + 1):
                                   if (num % i) == 0:
                                       print(num, 'is not prime')
                                       break
                               else:
                                   print(num, "is a prime number")
                           else:
                               print(num, "is not a prime number")
                           Enter a number: 12
                           12 is not a prime number

                16.  Write a program to input two numbers and swap both the numbers without using the third number.

               Ans.  [1]:  x = int(input("Enter the value of x: "))
                           y = int(input("Enter the value of y: "))
                           print("Numbers before swapping: %d   %d\n" %(x,y))
                           x = x + y
                           y = x - y
                           x = x - y
                           print("Numbers after swapping: %d   %d\n"%(x,y))
                           Enter the value of x: 22
                           Enter the value of y: 14
                           Numbers before swapping: 22 14
                           Numbers after swapping: 14 22

                17.  Using Numpy Package:
                      • Create a 4×2 array with random integer.
                      • Create 3×3 array with all zeros.

               Ans.  [1]:  import numpy as np
                           array1 = np.random.randint(0, 10, (4, 2))
                           print("4x2 Array with Random Integers:")
                           print(array1)
                           import numpy as np
                           array2 = np.zeros((3, 3))
                           print("\n3x3 Array with Zeros:")
                           print(array2)
                           4x2 Array with Random Integers:
                           [[5 1]
                            [7 8]
                            [0 1]
                            [1 5]]
                           3x3 Array with Zeros:
                           [[0. 0. 0.]
                            [0. 0. 0.]
                            [0. 0. 0.]]

                18.  Using Matplotlib and the given data, plot a bar chart:
                    No of people voted = [23,45,31,40,35]

                    Area covered = [‘a1’,’a2’,’a3’,’a4’,’a5’]



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