Question

81/8=9, 121/6=19, 281/4=69, 321/2=?

Answer 1

The answer should be 109.

Step-by-step explanation:

The given sequence is :

81/8 = 9     :  (81 - 9)/8 = 72/8 = 9    

121/6 = 19   : (121 - 7)/6 = 114/6 = 19

281/4 = 69 : (281 - 5)/4 = 276/4 = 69

As in each numerator first subtract 9, then (9-2)=7, then (7-2)=5 and last would be (5-2)=3

321/2 = ?   : (321 - 3)/2 = 318/2 = 109

The answer should be 109.

Learn more reasoning question : https://brainly.in/question/10818857

Answer 2

The missing number is 159.

Step-by-step explanation:

The given sequence:

$\dfrac{81}{8}=9$, $\dfrac{121}{6}=19$, $\dfrac{281}{4}=69$

To find, the value of $\dfrac{321}{2}$ = ?

$\dfrac{81}{8}$ = 9

$\dfrac{81-9}{8} = \dfrac{72}{8}$ = 9

$\dfrac{121}{6}$ = 19

$\dfrac{121-7}{6} = \dfrac{114}{6}$ = 19

$\dfrac{284}{4}$ = 69

$\dfrac{284-5}{4} = \dfrac{276}{4}$= 69

Similarly,

$\dfrac{321}{2}$ = ?

? = $\dfrac{321-3}{4} = \dfrac{318}{2}$= 159

Thus, the missing number is 159.