For ($i=9; $i< 10; $i=$i-1) { for($j=9; $i< 10; $j=$j-1) { for ($k=9; $k< 10; $k=$k-1) { echo $i . 'x' . $j . 'x' . $k . '=' . $i*$j*$k . ''; } } }   где я сделал не правильно?

Rachel completed typing an official document with a word processing program. she wants to make sure that her document has no typographical errors. she also wants all headings to have the same font. which features in a word processing program should she use? rachel should use the feature in a word processing program to find typographical errors. she should apply to have uniform headings.

What would be the address of the cell, which is at the intersection of the second row and the third column in a worksheet?

Write a program that asks the user to enter the name of an input file. if the file does not exist, the program should prompt the user to enter the file name again. if the user types quit in any uppercase/lowercase combinations, then the program should exit without any further output.