diff --git a/30DaysCode/day10_Binary_Numbers.py b/30DaysCode/day10_Binary_Numbers.py
new file mode 100644
index 0000000..9549155
--- /dev/null
+++ b/30DaysCode/day10_Binary_Numbers.py
@@ -0,0 +1,15 @@
+count_dict, count, Last_item = {}, 0, None
+binario = str(bin(int(input())))
+
+binary_list = [n for n in binario]
+for item in binary_list:
+    if Last_item != item:
+        Last_item = item
+        count = 1
+    else:
+        count += 1
+
+    if count > count_dict.get(item, 0):
+        count_dict[item] = count
+
+print(count_dict.get('1'))
diff --git a/30DaysCode/day11_2d_arrays.py b/30DaysCode/day11_2d_arrays.py
new file mode 100644
index 0000000..0705de8
--- /dev/null
+++ b/30DaysCode/day11_2d_arrays.py
@@ -0,0 +1,16 @@
+def definition(args):
+    list_patterns, list_range = [], range(4)
+    for i in list_range:
+        for j in list_range:
+            list_patterns.append([args[i][j], args[i][j+1], args[i][j+2],
+                                  args[i+1][j+1], args[i+2][j], args[i+2][j+1], args[i+2][j+2]])
+    return list_patterns
+
+
+if __name__ == '__main__':
+    arr = []
+    for _ in range(6):
+        arr.append(list(map(int, input().rstrip().split())))
+
+    result = max([sum(list_patt) for list_patt in definition(arr)])
+    print(result)
diff --git a/30DaysCode/day1_data_types.py b/30DaysCode/day1_data_types.py
new file mode 100644
index 0000000..4703ded
--- /dev/null
+++ b/30DaysCode/day1_data_types.py
@@ -0,0 +1,15 @@
+i = 4
+d = 4.0
+s = 'HackerRank '
+
+'''Declare second integer, double, and String variables.
+Read and save an integer, double, and String to your variables.'''
+
+ii, dd, ss = int(input()), float(input()), input()
+
+'''Print the sum of both integer variables on a new line.
+Print the sum of the double variables on a new line.
+Concatenate and print the String variables on a new line
+The 's' variable above should be printed first.'''
+
+print('{}\n{:.1f}\n{}'.format(i+ii, d+dd, s+ss))
diff --git a/30DaysCode/day2_operator.py b/30DaysCode/day2_operator.py
new file mode 100644
index 0000000..e0bcdb6
--- /dev/null
+++ b/30DaysCode/day2_operator.py
@@ -0,0 +1,20 @@
+#!/bin/python3
+
+import math
+import os
+import random
+import re
+import sys
+
+# Complete the solve function below.
+def solve(meal_cost, tip_percent, tax_percent):
+    return print(round(meal_cost*(1+tip_percent*0.01 +tax_percent*0.01)))
+
+if __name__ == '__main__':
+    meal_cost = float(input())
+
+    tip_percent = int(input())
+
+    tax_percent = int(input())
+
+    solve(meal_cost, tip_percent, tax_percent)
diff --git a/30DaysCode/day3_Intro_Cond_Statments.py b/30DaysCode/day3_Intro_Cond_Statments.py
new file mode 100644
index 0000000..d10a4a2
--- /dev/null
+++ b/30DaysCode/day3_Intro_Cond_Statments.py
@@ -0,0 +1,21 @@
+#!/bin/python3
+
+import math
+import os
+import random
+import re
+import sys
+
+if __name__ == '__main__':
+    N = int(input())
+    if N % 2 != 0:
+        print('Weird')
+    elif 2 <= N <= 5:
+        print('Not Weird')
+    elif 6 <= N <= 20:
+        print('Weird')
+    elif N > 20:
+        print('Not Weird')
+
+
+
diff --git a/30DaysCode/day4_class_vs_instance.py b/30DaysCode/day4_class_vs_instance.py
new file mode 100644
index 0000000..898b304
--- /dev/null
+++ b/30DaysCode/day4_class_vs_instance.py
@@ -0,0 +1,28 @@
+class Person:
+    def __init__(self,initialAge):
+        if(initialAge > 0):
+            self.initialAge=initialAge
+        else:
+            print("Age is not valid, setting age to 0.")
+            self.initialAge=0
+
+    def amIOld(self):
+        if(self.initialAge < 13):
+            print("You are young.")
+        elif 13 <= self.initialAge < 18:
+            print("You are a teenager.")
+        else:
+            print("You are old.")
+            
+    def yearPasses(self):
+        self.initialAge += 1
+
+t = int(input())
+for i in range(0, t):
+    age = int(input())         
+    p = Person(age)  
+    p.amIOld()
+    for j in range(0, 3):
+        p.yearPasses()       
+    p.amIOld()
+    print("")
diff --git a/30DaysCode/day5_loops.py b/30DaysCode/day5_loops.py
new file mode 100644
index 0000000..a4c19ba
--- /dev/null
+++ b/30DaysCode/day5_loops.py
@@ -0,0 +1,16 @@
+#!/bin/python3
+
+import math
+import os
+import random
+import re
+import sys
+
+
+
+if __name__ == '__main__':
+    n = int(input())
+    if 2<=n<=20:
+        #Print ten lines where 1<=i<=10, result = n*i
+        for i in range(1,11):
+            print('{} x {} = {}'.format(str(n),str(i),str(n*i)))
diff --git a/30DaysCode/day6_lets_review.py b/30DaysCode/day6_lets_review.py
new file mode 100644
index 0000000..1e74bf7
--- /dev/null
+++ b/30DaysCode/day6_lets_review.py
@@ -0,0 +1,17 @@
+def lets_review(t):
+    #Constraints t and s
+    if 1 <= t <= 10:
+        s = input()
+        if 2 <= len(s) <= 10000:
+            even_s, odd_s = '', ''
+            for j, letter in enumerate(s):
+                if j % 2 == 0:
+                    even_s += letter
+                else:
+                    odd_s += letter
+            return print('{} {}'.format(even_s, odd_s)), lets_review(t-1)
+
+
+if __name__ == '__main__':
+    t = int(input())
+    lets_review(t)
diff --git a/30DaysCode/day7_array.py b/30DaysCode/day7_array.py
new file mode 100644
index 0000000..75b5c2e
--- /dev/null
+++ b/30DaysCode/day7_array.py
@@ -0,0 +1,6 @@
+#!/bin/python3
+
+if __name__ == '__main__':
+    n = int(input())
+    arr = list(map(int, input().rstrip().split()))
+    print(' '.join(list(map(str,arr[::-1]))))
diff --git a/30DaysCode/day8_dictionaries_and_maps.py.py b/30DaysCode/day8_dictionaries_and_maps.py.py
new file mode 100644
index 0000000..5f17c36
--- /dev/null
+++ b/30DaysCode/day8_dictionaries_and_maps.py.py
@@ -0,0 +1,16 @@
+n = int(input())
+data = []
+while 1 <= n <= 1e5:
+    data.append(input().split(' '))
+    n -= 1
+phonebook = dict(data)
+
+while True:
+    try:
+        query = input()
+        if phonebook.get(query):
+            print('{}={}'.format(query, phonebook[query]))
+        else:
+            print('Not found')
+    except:
+        break
diff --git a/30DaysCode/day8_dictionaries_maps.py b/30DaysCode/day8_dictionaries_maps.py
new file mode 100644
index 0000000..9a4da53
--- /dev/null
+++ b/30DaysCode/day8_dictionaries_maps.py
@@ -0,0 +1,24 @@
+def phonebook(n):
+    data = []
+    while 1 <= n <= 1e5:
+        data.append(input().split(' '))
+        n -= 1
+    return data
+
+
+def queries(n):
+    phone = dict(phonebook(n))
+    while True:
+        try:
+            query = input()
+            if phone.get(query):
+                print('{}={}'.format(query, phone[query]))
+            else:
+                print('Not found')
+        except:
+            break
+
+
+if __name__ == "__main__":
+    n = int(input())
+    queries(n)
diff --git a/30DaysCode/day9_recursion3.py b/30DaysCode/day9_recursion3.py
new file mode 100644
index 0000000..0b12e35
--- /dev/null
+++ b/30DaysCode/day9_recursion3.py
@@ -0,0 +1,16 @@
+#!/bin/python3
+import os
+
+def factorial(n):
+    if 0 <= n <= 1:
+        return 1
+    elif 2 <= n <= 12:
+        return n*factorial(n-1)
+
+
+if __name__ == '__main__':
+    fptr = open(os.environ['OUTPUT_PATH'], 'w')
+    n = int(input())
+    result = factorial(n)
+    fptr.write(str(result) + '\n')
+    fptr.close()