India, Nov. 6 -- Former UK Prime Minister Rishi Sunak and his wife Akshata Murty recently squared off against each other in a maths competition, a video of which is going viral on Instagram. The friendly competition was held to promote their charity, The Richmond Project, which is dedicated to improving numeracy across the UK.

The premise of the competition was simple - both Sunak and Murty were given a buzzer. A volunteer then read out maths questions of varying difficulty, and whoever knew the answer had to buzz and give the correct answer.

The first few questions were relatively simple. Rishi Sunak and Akshata Murty, who is the daughter of Infosys founder Narayana Murthy, had to answer problems like "Simplify the fraction 12/18" or "...