```day = 0 # birth day to be determined

# Prompt the user to answer the first question
question1 = "Is your birthday in Set1?\n" + \
" 1  3  5  7\n" + \
" 9 11 13 15\n" + \
"17 19 21 23\n" + \
"25 27 29 31" + \
"\nEnter n/N for No and y/Y for Yes: "

day += 1

# Prompt the user to answer the second question
question2 = "\nIs your birthday in Set2?\n" + \
" 2  3  6  7\n" + \
"10 11 14 15\n" + \
"18 19 22 23\n" + \
"26 27 30 31" + \
"\nEnter n/N for No and y/Y for Yes: "

day += 2

# Prompt the user to answer the third question
question3 = "\nIs your birthday in Set3?\n" + \
" 4  5  6  7\n" + \
"12 13 14 15\n" + \
"20 21 22 23\n" + \
"28 29 30 31" + \
"\nEnter n/N for No and y/Y for Yes: "

day += 4

# Prompt the user to answer the fourth question
question4 = "\nIs your birthday in Set4?\n" + \
" 8  9 10 11\n" + \
"12 13 14 15\n" + \
"24 25 26 27\n" + \
"28 29 30 31" + \
"\nEnter n/N for No and y/Y for Yes: "

day += 8

# Prompt the user to answer the fifth question
question5 = "\nIs your birthday in Set5?\n" + \
"16 17 18 19\n" + \
"20 21 22 23\n" + \
"24 25 26 27\n" + \
"28 29 30 31" + \
"\nEnter n/N for No and y/Y for Yes: "