+116 Let a_1, a_2, a_3, \dots be an infinite geometric series with positive terms. If a_2 = 10, then find the smallest possible value of
a_1 + a_2 + a_3.
+113 The smallest possible value of
a1+a2+a3a sub 1 plus a sub 2 plus a sub 3
đť‘Ž1+đť‘Ž2+đť‘Ž3
is 30
