Jobseekers have faced crazy questions during an interview, including being asked to guess how many nappies are bought every year, and how long it would take to clean every window in London.

The questions, ranging from the wacky to the totally irrelevant, were unearthed by jobs site Glassdoor from thousands revealed by UK candidates.

A candidate for a sales assistant in Portsmouth was asked which magic power she would like to have, while a software engineer in London was asked to guess how he would fit an elephant into a fridge.

A man going for a job as a telecoms manager in London was asked how many people born in 2013 were named Gary.

Susan Underwood of Glassdoor said: "Employers are asking tough interview questions to test a job candidate's critical thinking skills, see how they problem-solve on the spot and gauge how they approach difficult situations."

Glassdoor said job candidates should be prepared to tackle any question during an interview.