diff --git a/Mahendra/task1A.py b/Mahendra/task1A.py
new file mode 100644
index 0000000..a7b8f7a
--- /dev/null
+++ b/Mahendra/task1A.py
@@ -0,0 +1,9 @@
+import numpy as np
+n=100
+ycap=np.random.rand(n)
+y=np.random.randint(0,2,n)
+def cross_entropy_loss(y,ycap):
+    O = -np.sum((np.multiply(y,np.log2(ycap))+np.multiply(1-y,np.log2(1-ycap))))/n
+    return O
+
+print(cross_entropy_loss(y,ycap))
diff --git a/Mahendra/task1B.py b/Mahendra/task1B.py
new file mode 100644
index 0000000..ffe80f6
--- /dev/null
+++ b/Mahendra/task1B.py
@@ -0,0 +1,16 @@
+class sumpairs:
+    def __init__(self, l, target):
+        self.l=l
+        self.target=target
+        self.d={}
+    
+    def findpairs(self):
+        for i in range(len(self.l)):
+            for j in range(len(self.l)):
+                if self.l[i]+self.l[j]==self.target:
+                    self.d[len(self.d)+1]=[i,j]
+        return self.d
+
+#test:
+a=sumpairs([10,20,10,40,50,60,70],50)
+print(a.findpairs())