diff --git a/staff/ousman-kruball/playground/array/Array.prototype.includes b/staff/ousman-kruball/playground/array/Array.prototype.includes
deleted file mode 100644
index b8dcf2b..0000000
--- a/staff/ousman-kruball/playground/array/Array.prototype.includes
+++ /dev/null
@@ -1,31 +0,0 @@
-console.log('TEST Array.prototype.includes.js')
-
-console.log('CASE check cars includes ferrari')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('ferrari')
-console.log(contains)
-// false
-
-console.log('CASE check cars includes fiesta')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('fiesta')
-console.log(contains)
-// true
-
-console.log('CASE checkcars cars includes lambo from index 1')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('lambo, 1')
-console.log(contains)
-// false
-
-//TODO add negative offset test case
-
-console.log('CASE checkcars cars inludes m5 from -1')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('m5, -1')
-console.log(contains)
-// true
\ No newline at end of file
diff --git a/staff/ousman-kruball/playground/array/Array.prototype.inludes.js b/staff/ousman-kruball/playground/array/Array.prototype.inludes.js
deleted file mode 100644
index b8dcf2b..0000000
--- a/staff/ousman-kruball/playground/array/Array.prototype.inludes.js
+++ /dev/null
@@ -1,31 +0,0 @@
-console.log('TEST Array.prototype.includes.js')
-
-console.log('CASE check cars includes ferrari')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('ferrari')
-console.log(contains)
-// false
-
-console.log('CASE check cars includes fiesta')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('fiesta')
-console.log(contains)
-// true
-
-console.log('CASE checkcars cars includes lambo from index 1')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('lambo, 1')
-console.log(contains)
-// false
-
-//TODO add negative offset test case
-
-console.log('CASE checkcars cars inludes m5 from -1')
-
-var cars = ['lambo', 'cinquecento', 'fiesta', 'm5']
-var contains = cars.includes('m5, -1')
-console.log(contains)
-// true
\ No newline at end of file