See the following MWE:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[left=0.50in, right=0.50in, top=0.50in, bottom=0.50in]{geometry}
\begin{document}
\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hline
Number & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\ \hline
Day & Monday & Tuesday & Wednesday & Thursday & Friday & Saturday & Sunday \\ \hline
\end{tabular}
\end{document}
Question:1 How can i adjust vertical alignment for all cells in given table, i mean vertically centered.
Question:2 How can i increase a length (width)of particular row or column?

p{<desired width>}. – Zarko Mar 04 '18 at 08:36