I have thin matchsticks each of thickness 1 mm. The length of each matchstick is ‘L ’ mm. There are a few matchsticks kept side by side on a table such that the heads of all matchsticks are in one line and the tail ends of all matchsticks are together in another different line and the lengths of the matchsticks are parallel. The number of matchsticks kept is ‘B’. What is the area of the plane formed by the matchsticks (in mm2)?
What is the number of matchsticks you need to make 'n' number of 2s if 5 matchsticks are used to make one 2?