Students sitting A-Level exams have complained after they were set an Edexcel Maths C1 non-calculator paper which contained questions they say required a calculator.

Exam board Edexcel has launched an investigation into how part of an A-level maths paper was leaked online. Blacked-out images of two questions were shared on social media on Thursday afternoon.

Just over half marks needed for A in A-level maths, leaked documents show Leaked grade boundaries show that scoring 14.3% overall in Edexcel’s A-level maths qualification would result in an E grade.

Leaked documents show that A level maths candidates had to get just 55 per cent of answers correct to score an A grade this year.

An image of the leaked Edexcel A level maths paper was posted online. Credit: Twitter Exam board Edexcel is at the centre of a leak relating to an A-level maths exam sat by pupils on Friday.

Questions from today's A-Level exam leaked online before the test. Two exam questions from Edexcel's maths paper 3 appeared on Twitter last night.

Grade boundaries for Edexcel ‘s maths A-level show students who gained 165 out of a possible maximum of 300 marks (55 per cent) will be awarded an A.