2
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What number is ? in follow?

2  = 46
4  = 812
8  = 1624
16 = ?
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7
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$4+6 = 10 = 2 \cdot 5$, $8+12 = 20 = 4 \cdot 5$, $16+24 = 40 = 8 \cdot 5$, $32+48 = 80 = 16 \cdot 5$

or

$6-4=2$, $12-8=4$, etc.

Therefore,

So $? = 3248$

Of course, there are many possible solutions to this question...

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  • $\begingroup$ Correct ....! +1 $\endgroup$ – Shafizadeh Nov 22 '15 at 14:08
6
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3248

I think the right side of the equation are actually always 2 numbers that are respectively the double and triple of the number on the left.

2 = 4 6
4 = 8 12
8 = 16 24
16 = 32 48
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  • $\begingroup$ Correct ...! +1 $\endgroup$ – Shafizadeh Nov 22 '15 at 14:08

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