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diff --git a/Images/3.png b/Images/3.png
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diff --git a/practice2.py b/practice2.py
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+++ b/practice2.py
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+#EXERCISE 2 - Summing numbers
+
+def mysum(num):
+    t = 0
+    for num in num:
+        t += num
+    return t
+    
+
+n = int(input('how many number you want to add'))
+list1 = []
+for i in range(0,n):
+    a = int(input())
+    list1.insert(i,a)
+
+print(mysum(list1))
diff --git a/practice3.py b/practice3.py
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+++ b/practice3.py
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+#EXERCISE 3 - Run timing
+
+def run_timing():
+    totalRuns = 0
+    totalTime = 0
+    while True:     
+        timing = input('Enter 10 km run time: ').strip()
+        
+        if not timing:   
+            break
+        
+        totalTime += float(timing)
+        totalRuns += 1
+    averageTime = totalTime / totalRuns
+    print(f'Average of {averageTime}, over {totalRuns} runs')
+    
+run_timing()