Who among the following was the youngest recipient of the Sangeetha Kalanidhi awarded by the Music Academy in 1947?
Semmangudi Radhakrishna Srinivasa Iyer
Ariyakudi Ramanuja Iyengar
Mallikarjun Bheemarayappa Mansur
Bhimsen Joshi
Which of the following is Fisher's equation of exchange?