Attempted solution to the first question

Author: Backbiter99

first.py

@@ -0,0 +1,26 @@
+a = 10
+b = 20
+print('Initially')
+print("a =",a,",","b =",b,'\n')
+temp=a
+a=b
+b=temp
+print("After interchanging")
+print("a =",a,",","b =",b,'\n')
+
+
+
+print('Another method')
+a = 10
+b = 20
+a = a + b
+b = a - b
+a = a - b
+print("a =",a,",",'b =',b,'\n')
+
+
+print('Yet another method')
+a = a ^ b
+b = b ^ a
+a = a ^ b
+print('a =',a,',','b =',b)