diff --git a/solutions/day-01/level1.js b/solutions/day-01/level1.js
new file mode 100644
index 0000000..1c7f8ed
--- /dev/null
+++ b/solutions/day-01/level1.js
@@ -0,0 +1,39 @@
+//array
+// 1
+const arr = Array();
+console.log(arr)
+//2
+const arr1 = Array(1,2,3,4,5);
+console.log(arr1)
+//3
+console.log(arr.length)
+//4
+console.log(arr1[0] + " " + arr1[4] + " " + arr1[2])
+
+//5
+const mixedDataTypes = [
+    'Asabeneh',
+    250,
+    true,
+    false,
+    { country: 'Finland', city: 'Helsinki' },
+    { skills: ['HTML', 'CSS', 'JS', 'React', 'Python'] },
+  ]
+  
+  console.log(mixedDataTypes.length)
+
+  //6
+const itCompanies = ['Facebook', 'Google', 'Microsoft', 'Apple', 'IBM', 'Oracle', 'Amazon']
+//7-10
+console.log(itCompanies)
+console.log(itCompanies.length)
+//11
+itCompanies.map((i) => {
+  i.toUpperCase();
+})
+
+//12
+console.log(itCompanies.includes('Oracle'))
+
+
+//level2