challenge 1

Welcome
TO
Web development

challenge2

x 2 + y 2 + 2 x y = ( x + y ) 2

challenge3

Area of Circle = π r 2 Circumference of Circle = 2 π r

challenge4

Here, ABC content is written without using character in HTML code

challenge5

Student Personal Information Contact Information
Age Gender Phone Email
John Smith 20 Male 123-456-7890 john@example.com
Emily Johnson 22 Female 987-654-3210 emily@example.com