Question 17

Select the correct option that will fill in the blank and complete the series.
88, 98, 83, 103, 78, ?

Solution

$$ 88, 98, 83, 103, 78, ? $$

$$ 88 - 98 = +10 $$

$$ 98 - 83 = -15 $$

$$ 83 - 103 = +20 $$

$$ 103 - 78 = -25 $$

Hence in next series we will add $$ +30 $$ in last number $$ 78 $$

$$ 78 + 30 = 108 $$

Hence Option A is 108.

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