1.	Write a program to create a dictionary containing names of competition winner students as keys and number of their wins as values. 
Ans: dic={'rishav':5,'rashmi':3,'ayusman':4,'jyoti':2,'barala':2}
print(dic)
Output: {'rishav': 5, 'rashmi': 3, 'ayusman': 4, 'jyoti': 2, 'barala': 2}
2.	Write a program to create a phone directory for all your friends and then print it. 
Ans: dic={'rishav':111111111,'rashmi':3223121122,'ayusman':12122134,'jyoti':23234537653,'barala':2232322}
print(dic)
Output: {'rishav': 111111111, 'rashmi': 3223121122, 'ayusman': 12122134, 'jyoti': 23234537653, 'barala': 2232322}
3.	Marks of three students ‘Suniti’, ‘Ryna’, and ‘ziva’ in 3 subjects are available in dictionary. 
D1 = {1:40, 2:70, 3:70} 
D2 = {1:40, 2:50, 3:60} 
D1 = {1:70, 2:80, 3:90} 
output: 
Key 		Value 
Ryna		{1:40, 2:50, 3:60} 
Subject(Key) 	Marks(Value) 
1	40 
2	50 
3	60 
Find the highest mark in the subject 3.