? 1 1
9 4 4
2 3 5
Find the number which will replace the $?$ .

8

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10

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14

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16

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Solution

The correct option is C $14$
We have the 2 different series
1st is 1 1 2 3 and 2nd is 4 4 5 9 14
In first series we can get the terms just by adding 1 to the 2nd term and then sum of two previous terms.
2nd series is obtained by adding 1 to 4 and then sum of two previous terms.
Hence 14 replaces question mark?.

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2, 8, 16, 128, ?

1, 1, 4, 8, 9, 27, 16, ?

Replace by the correct number:
(i) $- \frac{5}{8} = \frac{1}{4}$
(ii) $- \frac{1}{5} = \frac{1}{2}$
(iii) $\frac{1}{2} - = \frac{1}{6}$

0, 2, 8, 14, ?, 34, 48, 62

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