psc.ap.gov.in Asst... · 61. In which of the following year, the distant planet of solar system,...
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psc.ap.gov.in Asst... · 61. In which of the following year, the distant planet of solar system, Pluto was discovered by Tombaugh. 1) 1910 2) 1920 3) 1930 4) 1940 62. NASA named its