Predict the output

a, b, c = 10, 20, 30
p, q, r = c - 5, a + 3, b - 4
print ('a, b, c :', a, b, c, end = '')
print ('p, q, r :', p, q, r)

Find the errors in following code fragment:

y = x + 5
print (x, Y)

Find the errors in following code fragment:

a = input("value")
b = a/2
print (a, b)

Find the errors in following code fragment : (The input entered is XI)

c = int (input ( "Enter your class") )
print ("Your class is", c)