Question

1÷2=20,3÷2=110,1÷3=42,2÷5=??​

Answer 1

24584158768878885725

Answer 2

Given:

1 ÷ 2 = 20, 3 ÷ 2 = 110, 1 ÷ 3 = 42

To find:

2 ÷ 5

Solution:

Selecting the terms from given, we have,

$\dfrac{1}{2} + \dfrac{1}{3} = \dfrac{3+2} {6} = \dfrac{5}{6}$

$\Rightarrow 20 + 42 = 62$

$\therefore \dfrac{5}{6} = 62$

$\dfrac{\frac{5}{6}}{\frac{1}{3}} = \dfrac{5}{6} \times \dfrac{3}{1}=\dfrac{5}{2}$

$\Rightarrow \dfrac{62}{42} = \dfrac{31}{21}$

$\therefore \dfrac{5}{2} = \dfrac{31}{21}$

$\Rightarrow \dfrac{2}{5} = \dfrac{21}{31}$

∴ 2 ÷ 5 = 21 ÷ 31