Instructions

In each of the following questions, select the missing number from the given responses :

Question 184

1, 3. 8, 19, 42, ?

Solution

The Series follows the pattern
1
1 $$\times2$$ +1 =3
3 $$\times2$$ +2 =8
8 $$\times2$$ +3 =19
19 $$\times2$$ +4 =42
42 $$\times2$$ +5 =89

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