diff --git a/hackerrank.py b/hackerrank.py
new file mode 100644
index 0000000..ee21f42
--- /dev/null
+++ b/hackerrank.py
@@ -0,0 +1,25 @@
+# <!-- HackerRank -->
+# Arithmetic Operators
+if __name__ == '__main__':
+    a = int(input())
+    b = int(input())
+    print(a+b,a-b,a*b,sep='\n')
+# Find the Runner-Up Score!
+if __name__ == '__main__':
+    n = int(input())
+    arr = map(int, input().split())
+    print(sorted(list(set(arr)))[-2])
+# Print Function
+if __name__ == '__main__':
+    n = int(input())
+    print(*[i for i in range(1,n+1)],sep="")
+# Finding the percentage
+if __name__ == '__main__':
+    n = int(input())
+    student_marks = {}
+    for _ in range(n):
+        name, *line = input().split()
+        scores = list(map(float, line))
+        student_marks[name] = scores
+    query_name = input()
+    print("{0:.2f}".format(*[(sum(student_marks[i])/len(student_marks[i])) for i in student_marks if i==query_name]))
\ No newline at end of file
diff --git a/q1.py b/q1.py
new file mode 100644
index 0000000..24a1334
--- /dev/null
+++ b/q1.py
@@ -0,0 +1,29 @@
+# <!-- * 1-Rock-Paper-Scissors
+# * Oyuncularin adlarini alip tas - kagit - makas oyunu oynatiniz.
+# * Oyun 10 el surecektir. 10 el sonunda kazanan belli olacaktir. Skor sonucta gosterilecektir. -->
+count=10
+player1=input("First player name: ")
+player2=input("Second player name: ")
+player1_count,player2_count=0,0
+while count>0:
+    count-=1
+    player1_choose=input("Please choose Rock(r) or Paper(p) or Scissors(s)")
+    player2_choose=input("Please choose Rock(r) or Paper(p) or Scissors(s)")
+    if (player1_choose=='s' and player2_choose=='p') or (player1_choose=='r' and player2_choose=='s') or (player1_choose=='p' and player2_choose=='r'):
+        player1_count+=1
+        print("{} win \nScore: {} : {}  \n{} : {}".format(player1,player1,player1_count,player2,player2_count))
+        print(player1, " : ", player1_choose,' ',player2,' : ', player2_choose)
+    elif (player1_choose=='s' and player2_choose=='s') or (player1_choose=='r' and player2_choose=='r') or (player1_choose=='p' and player2_choose=='p'):
+        print("Draw Score: {} : {}  \n{} : {}".format(player1,player1_count,player2,player2_count))
+        print(player1, " : ", player1_choose,' ',player2,' : ', player2_choose)
+    elif (player2_choose=='s' and player1_choose=='p') or (player2_choose=='r' and player1_choose=='s') or (player2_choose=='p' and player1_choose=='r'):
+        player2_count+=1
+        print("{} win \nScore: {} : {}  \n{} : {}".format(player2,player1,player1_count,player2,player2_count))
+        print(player1, " : ", player1_choose,' ',player2,' : ', player2_choose)
+    if count==0:
+        if player1_count>player2_count:
+            print("The game ended.\n{} won \nScore: {} : {}  \n{} : {}".format(player1,player1,player1_count,player2,player2_count))
+        elif player1_count==player2_count:
+            print("The game ended.\nDraw \nScore: {} : {}  \n{} : {}".format(player1,player1_count,player2,player2_count))
+        else:
+            print("The game ended.\n{} won \nScore: {} : {}  \n{} : {}".format(player2,player1,player1_count,player2,player2_count))
diff --git a/q2.py b/q2.py
new file mode 100644
index 0000000..9fad9b0
--- /dev/null
+++ b/q2.py
@@ -0,0 +1,16 @@
+# <!-- * 2- Ders Puani Hesaplama
+# * Kullanıcıdan Adi, Soyadi, Ogrenci Numarasi, 4 ders adi, bu derslerin Vize ve Final notlari istenecektir.
+# * Vize notunun % 40′ı ile Final Notunun %60′ınin toplamı yil sonu ortalamasini verecektir.
+# * Ortalama 50‘den küçükse ekranda “KALDI“, 50 ve üstüyse ekranda “GEÇTİ” yazdırılacaktır.
+# * Bu yazdirma islemi 4 ders icinde yapilacak ve dersler alt alta yazdirilacaktir. -->
+students_informations=[input("Ogrencinin adi: "),input("Ogrencinin soyadi: "),input("Ogrencinin numarasi: ")]
+subject_1=[input("Ders adi: "),int(input("Vize puani: ")),int(input("Final puani: "))]
+subject_2=[input("Ders adi: "),int(input("Vize puani: ")),int(input("Final puani: "))]
+subject_3=[input("Ders adi: "),int(input("Vize puani: ")),int(input("Final puani: "))]
+subject_4=[input("Ders adi: "),int(input("Vize puani: ")),int(input("Final puani: "))]
+for i in [subject_1,subject_2,subject_3,subject_4]:
+    point=i[1]*0.4+i[2]*0.6
+    if point>=50:
+        print("{} numarali ogrenci {} dersinden {} puan ile gecti.".format(students_informations[2],i[0],point))
+    else:
+        print("{} numarali ogrenci {} dersinden {} puan ile kaldi.".format(students_informations[2],i[0],point))
\ No newline at end of file
diff --git a/q3.py b/q3.py
new file mode 100644
index 0000000..e1d4504
--- /dev/null
+++ b/q3.py
@@ -0,0 +1,18 @@
+# <!-- * 3- Beden Kitle Indeksi Hesaplama
+# * Bir kisinin ağırlığının, boyuna göre normal olup olmadığını gösteren parametreye Beden Kitle İndeksi denir.
+# * Kısaca insanın kilosunu kişinin boy uzunluğunun karesine bölersek beden kitle indeksi ortaya çıkar.
+# * Kullanıcıdan kilo ve boy uzunluğunu alip çıkan sonuç 25'in altindaysa NORMAL,
+# * 25-30 arasında ise FAZLA KİLOLU, 30-40 arasında ise OBEZ,
+# * 40 ve üzerinde ise AŞIRI ŞİŞMAN şeklinde uyarı yazdiriniz. -->
+boy=float(input("Boyunuzu metre cinsinden giriniz: "))
+kg=float(input("Kilonuzu giriniz: "))
+beden_kitle_endeksi=kg/boy**2
+if beden_kitle_endeksi<=25:
+    print("Beden kitle endeksiniz : {} \nNORMAL".format(beden_kitle_endeksi))
+
+elif 25<beden_kitle_endeksi<=30:
+    print("Beden kitle endeksiniz : {} \nFAZLA KİLOLU".format(beden_kitle_endeksi))
+elif 30<beden_kitle_endeksi<=40:
+    print("Beden kitle endeksiniz : {} \nOBEZ".format(beden_kitle_endeksi))
+else:
+    print("Beden kitle endeksiniz : {} \nAŞIRI ŞİŞMAN".format(beden_kitle_endeksi))
\ No newline at end of file