You can only appear in CE 2013. You cannot claim age relaxation. As it is mentioned in rules that Employees of Nationalised Banks, State Bank of Pakistan, WAPDA, Regulatory Authorities, Autonomous bodies and other semi autonomous bodies are not entitled to age relaxation.

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Kon Kehta hy k Main Gum-naam ho jaon ga
Main tu aik Baab hn Tareekh mein Likha jaon ga