Question

Look at the series : 3, 7, 24, 11, __, 19, 19,... What number should fill the blank ?

Answer 1

15.....................

Answer 2

Hey mate ^_^

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Answer:
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In the main series,

4 is added to each number to arrive the next.

The main series:-

$3 + 4 = 7$

$7 + 4 = 11$

$11 + 4 = 15$

$15 + 4 = 19$

In alternate series,

5 is subtracted from each number t arrive the next number.

The alternate series:-

$24 - 5 = 19$

$19 - 5 = 14$

Therefore,

Answer) 15

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