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<!DOCTYPE html> <html> <body> <script> var a = 5 + 7; var b = 1993 + "Thành Nhân"; var c = "Thành Nhân" + 1993; var d = "Nguyễn" + " Thành Nhân"; document.write(a); document.write("<hr>"); document.write(b); document.write("<hr>"); document.write(c); document.write("<hr>"); document.write(d); </script> </body> </html>
<!DOCTYPE html> <html> <body> <script> var a = 5 + 7; var b = 1993 + "Thành Nhân"; var c = "Thành Nhân" + 1993; var d = "Nguyễn" + " Thành Nhân"; document.write(a); document.write("<hr>"); document.write(b); document.write("<hr>"); document.write(c); document.write("<hr>"); document.write(d); </script> </body> </html>