<p>Actor Benedict Cumberbatch has made an appearance on children's puppet TV show 'Sesame Street'.<br /><br /></p>.<p>The 37-year-old 'Sherlock' actor stopped by the show to help the muppets solve a math problem, reported Ace Showbiz.<br /><br />In the video titled 'Benedict Cumberbatch and the Sign of Four (or is it Three?)', Murray Monster declares himself Murray-arity, a reference to 'Sherlock' villain Moriarty.<br /><br />He asks the British actor to solve a 'brain-bending challenge', which is to determine whether there are more apples or more oranges on the table.<br /><br />The third season of Cumberbatch's 'Sherlock' just wrapped up its run in the US last Sunday, February 2 on PBS. The actor was recently also seen in movies '12 Years a Slave' and 'The Fifth Estate', and lent his voice to the dragon Smaug in 'The Hobbit: The Desolation of Smaug'.</p>
<p>Actor Benedict Cumberbatch has made an appearance on children's puppet TV show 'Sesame Street'.<br /><br /></p>.<p>The 37-year-old 'Sherlock' actor stopped by the show to help the muppets solve a math problem, reported Ace Showbiz.<br /><br />In the video titled 'Benedict Cumberbatch and the Sign of Four (or is it Three?)', Murray Monster declares himself Murray-arity, a reference to 'Sherlock' villain Moriarty.<br /><br />He asks the British actor to solve a 'brain-bending challenge', which is to determine whether there are more apples or more oranges on the table.<br /><br />The third season of Cumberbatch's 'Sherlock' just wrapped up its run in the US last Sunday, February 2 on PBS. The actor was recently also seen in movies '12 Years a Slave' and 'The Fifth Estate', and lent his voice to the dragon Smaug in 'The Hobbit: The Desolation of Smaug'.</p>