In c, write code for the following problems...

It is possible to calculate the value of from the infinite series 4=131+5171+91111+ This is called Leibniz formula. Write code to approximate the value of . Display the value with 10 digits after the decimal point. Problem 2: Printing a sequence using for loop Write for statements that print the following sequences of values: a. 1,3,5,7,9,11,13 b. 2,5,8,11,14,17 Problem 3: Printing a sequence using while loop Write while statements that print the following sequences of values: a. 30,20,10,0,10,20,30 b. 15,23,31,39,47,55