▁during ▁ 1 9 4 8 – 5 1 ▁and ▁Prime ▁Minister ▁of ▁Pakistan ▁during ▁ 1 9 5 1 – 5 3 . ▁Sob han ▁went ▁to ▁St . ▁Paul ' s ▁School , ▁Dar je eling ▁at ▁the ▁age ▁of ▁seven ▁and ▁completed ▁his ▁Senior ▁Cambridge ▁exam ination ▁in ▁ 1 9 5 0 . ▁He ▁then ▁attended ▁A itch ison ▁College ▁in ▁L ah ore ▁for ▁two ▁years . ▁He ▁went ▁on ▁to ▁Cambridge ▁University ▁to ▁ear n ▁his ▁b ach elor ' s ▁degree . ▁His ▁coh ort s ▁at ▁Cambridge ▁included ▁notable ▁econom ists ▁like ▁Am art ya ▁Sen , ▁Man m oh an ▁Singh ▁and ▁Mah b ub ▁ul ▁Ha q . ▁ ▁Sob han ▁moved ▁to ▁D h aka ▁in ▁January ▁ 1 9 5 7 . ▁He ▁joined ▁as ▁a ▁fac ulty ▁member ▁of ▁the ▁department ▁of ▁econom ics ▁at ▁the ▁University ▁of ▁D h aka ▁in ▁October ▁and ▁served ▁until ▁ 1 9 7 1 . ▁Muhammad ▁Y un us , ▁F ak hr ud din ▁Ah med , ▁A . ▁B . ▁Mir za ▁Az iz ul ▁Islam , ▁H oss ain ▁T ou f ique ▁Im am ▁and ▁Ay ub ur ▁Rah man ▁were ▁his ▁students . ▁In ▁a ▁sem inar ▁in ▁ 1 9 6 1 , ▁he ▁made ▁a ▁remark ▁on ▁the ▁economic ▁dispar ities ▁between ▁West ▁and ▁East ▁Pakistan ▁saying ▁" P ak istan ▁consisted ▁of ▁two ▁econom ies ". ▁It ▁made ▁the ▁head lines ▁on ▁the ▁Pakistan ▁Ob