Mukherjee, Vice President Hamid Ansari and Singh paid floral tributes at Gandhi's memorial in Rajghat here at a function.
UPA Chairperson Sonia Gandhi, Defence Minister A K Antony, Home Minister Sushilkumar Shinde, senior BJP leaders L K Advani and Sushma Swaraj and chiefs of three services paid tributes to the Father of the Nation at his memorial.
Delhi Chief Minister Sheila Dikshit, a number of central ministers, leaders of various political parties and people from different walks of life also paid homage to Gandhi.
A multi-faith prayer service was organised and devotional songs were sung at the function held at 11 AM.
Around 200 school students were also present at the function.
