Question

Solve this puzzle
3 6 12
4 8 16
5 10 ..

Answer 1

answer is 20
vertically
first row numbers will come by adding 1
2nd row adding 2
third row adding 4

Answer 2

Alternative. If we take it horizontally, 3×2=6, 6×2=12 4×2=8, 8×2=16 Similarly, 5×2=10, 10×2=20. You just hv to multiply wid 2...