diff --git a/CoinChange.py b/CoinChange.py
new file mode 100644
index 0000000..166ab9d
--- /dev/null
+++ b/CoinChange.py
@@ -0,0 +1,18 @@
+import sys
+def coinChange(coins, m, V):
+    table = [0]
+    # initialize value:
+    for i in range(V+1):
+        table.append(sys.maxsize)
+
+    for i in range(1, V+1):
+        for j in range(m):
+            coin = coins[j]
+            if coin <= i:
+                table[i] = table[i-coin] + 1 if table[i-coin] + 1 < table[i] else table[i]
+    return table[V]
+
+if __name__ == '__main__':
+    V = int(input("Enter value: "))
+    coins = list(map(int, input("Enter coins: ").split()))
+    print(coinChange(coins, len(coins), V))
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diff --git a/Sieve_of_erastothenes/sieveOfErastothenes.py b/Sieve_of_erastothenes/sieveOfErastothenes.py
new file mode 100644
index 0000000..b8bd203
--- /dev/null
+++ b/Sieve_of_erastothenes/sieveOfErastothenes.py
@@ -0,0 +1,20 @@
+def getFirstNPrimes(N):
+    table = [True]*(N+1)
+    # 0 and 1 are neither prime nor composite:
+    table[0] = table[1] = False
+    # 2 is the first prime number
+    p = 2
+    while p*p <= N:
+        if table[p] == True:
+            for j in range(p*p, N+1, p):
+                table[j] = False
+        p += 1
+    
+    # printing all the prime numbers:
+    for index, value in enumerate(table):
+        if value == True:
+            print(index, end=' ')
+
+if __name__ == '__main__':
+    N = int(input("Enter a number: "))
+    getFirstNPrimes(N) 
\ No newline at end of file