Egyptian Prime Minister-designate Ibrahim Mahlab's government was sworn in before Interim President Adly Mansour on Saturday, shortly after Mahlab briefed Mansour on his cabinet line-up.The 31-member cabinet includes 20 ministers from former Prime Minister Hazem Beblawi's government.Field Marshal Abdulfattah Al-Sisi help his post as Deputy Prime Minister and Minister of Defense. Ministers of Interior and Foreign Affairs, Mohammad Ibrahim and Nabil Fahmy respectively, kept their posts too.Mahlan is facing big challenges and his government will need to explore all means to revive the economy.