Which of the following statements are incorrect? Identify and correct them by substituting, adding or rearranging only one word or phrase.
a. FPTP system is followed for all the elections in India.
b. Election Commission does not supervise Panchayat and Municipal elections.
c. President of India cannot remove an Election Commissioner.
d. Appointment of more than one Election Commissioners in the Election Commission is mandatory.
In △ABC, DE is parallel to base BC, with D on AB and E on AC. If ADDB=23, find BCDE.