The record of marks out of 20 in Mathematics in the first unit test is as follows: 

20,6, 14, 10, 13, 15, 12, 14, 17. 17, 18, 1119, 9, 16. 18, 14, 7, 17, 20, 8, 15, 16, 10, 15, 12. 18, 17, 12, 11, 11, 10, 16, 14, 16, 18, 10, 7, 17, 14, 20, 17, 13, 15, 18, 20, 12, 12, 15, 10

Answer the following questions, from the above information. 

a. How many students scored 15 marks? 

b. How many students scored more than 15 marks? 

c. How many students scored less than 15 marks? 

d. What is the lowest score of the group? 

e. What is the highest score of the group?

बैंकों के राष्ट्रीयकरण का एक प्रमुख उद्देश्य शहरी/ग्रामीण क्षेत्रों में बैंकिंग सेवा का विकास करना है।