Related Clues:

• First part of publication replaced by advertising supplement
• Endless wrestling is a problem
• Extra dependency on carbon emission
• A fraction read out in mathematical problem?
• Problem in Descartes' raison d'être, finally
• Reckoning habit won't include coke to start with
• Sounds like a bit of a problem
• Process of summation
• Rider's habit – minus cape
• "The ___ of All Fears" (Clancy novel)
• 15, for any row, column or diagonal of a 3x3 magic square
• Amount of money; add
• 2 + 2 = 4, e.g
• Combination of numbers to find the sum
• Society returns Greek letter - it's an answer to additional problem