Egypt's education ministry voided the standardised high school (Thanaweya Amma) applied math (dynamics) final exam – which students took Sunday – after it was leaked, Ahram Arabic news website reported.
The ministry also postponed the geology, environmental science, history and pure maths (algebra and spatial geometry) exams as a precautionary measure, according to ministry sources.
The new dynamics exam will take place Saturday 2 July, and the geology, environmental science, history and pure maths will be held 4 July.
The religion exam will be held as scheduled on Wednesday 29 June at 9am, the ministry said.
Police arrested earlier this month the alleged administrators of Facebook pages that were being used as platforms for leaking final high school exam questions and their answers.
Investigations reportedly revealed that officials at the ministry's printing house were allegedly responsible for the leaks, and the prosecution has ordered their detention pending further investigation.
The final French, Spanish and economics exams were also reportedly leaked online last Thursday.