diff --git a/Dart/04. Largest palindrome product/hkp27299.dart b/Dart/04. Largest palindrome product/hkp27299.dart
new file mode 100644
index 0000000..9c54158
--- /dev/null
+++ b/Dart/04. Largest palindrome product/hkp27299.dart	
@@ -0,0 +1,26 @@
+//Euler 04
+
+
+bool isPalindrome(String str) {
+  String s = str.toLowerCase().replaceAll(RegExp(r'[\W_]'), '');
+  return s == s.split('').reversed.join('');
+}
+
+void main() {
+  int large = 0;
+  var x;
+  for (var i = 100; i < 1000; i++) {
+    for (var j = i; j< 1000; j++){
+      x = (i*j).toString();
+              if (isPalindrome(x)){
+                if(i*j > large){
+                  large = i*j;
+                }
+                
+              }
+
+    }
+    
+  }
+  print(large);
+}
diff --git a/Dart/10. Summation of primes/hkp27299.dart b/Dart/10. Summation of primes/hkp27299.dart
new file mode 100644
index 0000000..85203f2
--- /dev/null
+++ b/Dart/10. Summation of primes/hkp27299.dart	
@@ -0,0 +1,30 @@
+//Euler 10
+import'dart:math';
+
+void main() {
+  
+  int summ = 0;
+  for (int i = 2; i <= 2000001; i++) {
+    if(is_Prime(i)){
+  
+      summ += i;
+      
+    }
+    
+  }print(summ);
+}
+
+bool is_Prime(int x){
+  final lower = sqrt(x).floor();
+  var div_f = 0;
+  for (var div =1 ;div<=lower;div++){
+    if(x % div ==0){
+      div_f += 1;
+    }
+    if(div_f>1){
+      return false;
+    }
+  }
+  return true;
+  
+}
diff --git a/README.md b/README.md
index b794d72..81ba0dd 100644
--- a/README.md
+++ b/README.md
@@ -33,13 +33,13 @@ Happy Contributing! 😃
 | 01 | [Multiples of 3 and 5](https://projecteuler.net/problem=1)                   | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 | 02 | [Even Fibonacci numbers](https://projecteuler.net/problem=2)                 | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: | :white_check_mark: |                    |
 | 03 | [Largest prime factor](https://projecteuler.net/problem=3)                   | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: |                    |                    |
-| 04 | [Largest palindrome product](https://projecteuler.net/problem=4)             | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: |                    |                    | :white_check_mark: |                    | :white_check_mark: |                    |                    |                    |
+| 04 | [Largest palindrome product](https://projecteuler.net/problem=4)             | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: |                    |               :white_check_mark:     | :white_check_mark: |                    | :white_check_mark: |                    |                    |                    |
 | 05 | [Smallest multiple](https://projecteuler.net/problem=5)                      | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    | :white_check_mark: |                    |                    |                    |
 | 06 | [Sum square difference](https://projecteuler.net/problem=6)                  | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: |                    | :white_check_mark: |                    |                    |                    |
 | 07 | [10001st prime](https://projecteuler.net/problem=7)                          | :white_check_mark: |                    |                    | :white_check_mark: |                    | :white_check_mark: | :white_check_mark: |                    |                    |                    |                    |                    |
 | 08 | [Largest product in a series](https://projecteuler.net/problem=8)            |                    |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |                    |                    |                    |
 | 09 | [Special Pythagorean triplet](https://projecteuler.net/problem=9)            | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |                    |                    |                    |
-| 10 | [Summation of primes](https://projecteuler.net/problem=10)                   |                    |                    |                    | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |
+| 10 | [Summation of primes](https://projecteuler.net/problem=10)                   |                    |                    |                    | :white_check_mark: |                    |        :white_check_mark:            | :white_check_mark: |                    |                    |                    |                    |                    |
 | 11 | [Largest product in a grid](https://projecteuler.net/problem=11)             |                    |                    |                    | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |
 | 12 | [Highly divisible triangular number](https://projecteuler.net/problem=12)    |                    |                    |                    | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |
 | 13 | [Large sum](https://projecteuler.net/problem=13)                             | :white_check_mark: |                    |                    | :white_check_mark: |                    |                    |                    |                    |                    |                    |                    |                    |