"It'll be a British style game and it's not the unknown quantity we could have had, " he added.

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Rangers, in pot two, could have faced any of the English clubs but appear to have been handed a relatively favourable draw that includes the unknown quantity of Unirea Urziceni.

BBC: British clubs avoid Euro giants

They have a tough group with the world champions - and in my opinion the best team in the world - Brazil, a brave and physical Norwegian side and the unknown quantity of Morocco.

BBC: Confidence is key for Scotland

The process also uncovered a previously unknown quantity of paintings of Dundee, where the artist was born and raised.

BBC: Vincent Rattray

But the risks of choosing such an unknown quantity are enormous.

ECONOMIST: John McCain's running mate

Mr Hollande is something of an unknown quantity in Washington, although the White House sent a team to Paris last week to get to know his closest advisers.

BBC: Monsieur Hollande: Obama's new friend

But in some key repertoire for the Philharmonic, Bruckner and Schumann for instance, he is an unknown quantity.

ECONOMIST: Why Berlin��s musicians don��t need a maestro

Since he never satisfactorily accounted for the complete destruction of the stocks of WMDs, like those he previously used in lethal attacks on Iran and his own Kurds, the only reasonable conclusion was that they continued to exist in some form, in unknown quantity.

CENTERFORSECURITYPOLICY: Saddam had WMDs; the Left couldn't care less