Question

What should the bottom right stamp be numbered with?

Answer 1

Observe each pairs

#1

(82,4)

• 4×2=8

#2

(93,3)

• 3×3=9

#3

(61,6)

• 6×1=6

#4.

(22,?)

• 1×2=2

Answer is 1

Answer 2

Answer:

• let the upper row be y and lower row be x

• Considering (4, 82):

${ \rm{x :y = 4 :82 }} \\ \\ { \rm{ \frac{x}{y} = \frac{4}{82} }} \\ \\{ \boxed { \rm{ \: x = \frac{4y}{82} \: }}}$

• when y is 22:

${ \rm{x = \frac{(4 \times 22)}{82} }} \\ \\ { \rm{x \approx1}}$

Answer: It'd be 1