<div>sorry i'm forgot to post my following code</div>
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<div>\documentclass{article}</div>
<div>\font\tnr="Times New Roman/B" at 20pt<br>\def\mr#1{\mbox{\tnr #1}}</div>
<div>\pagestyle{empty}<br>\begin{document}<br>$$\hat{\mr a}$$<br>\end{document}<br> </div>
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<div>thanx in advance</div>
<div>bala</div>
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