Luna 2: September 12, 1959
Luna 3: October 7, 1959
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Space probes voyager 1 and Voyager 2 were launched in 1977
Voyager II was launched on August 22, 1977. It is still operational today.
108 = 2*2*3*3*3108 = 2*2*3*3*3108 = 2*2*3*3*3108 = 2*2*3*3*3
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2/3 - 3 = 2/3 - 3/1 = 2/3 - (3×3)/(1×3) = 2/3 - 9/3 = (2-9)/3 = -7/3 = -(2×3+1)/3 = -2 1/3