Question

8,3.5,?,2.25,2.5,3.75​

Answer 1

The missing number is equal to "2.5".

Step-by-step explanation:

The given series are

8,3.5,?,2.25,2.5,3.75​

The pattern follow,

$\times \dfrac{1}{2} -0.5, \times \dfrac{2}{2} -1, \times \dfrac{3}{2} -1.5, \times \dfrac{4}{2} -2, .....$

$3.5=8\times \dfrac{1}{2} -0.5=4-0.5=3.5$

$?=3.5\times \dfrac{2}{2} -1=3.5-1=2.5$

$2.25=2.5\times \dfrac{3}{2} -1.5=3.75-1.5=2.25$

$2.5=2.25\times \dfrac{4}{2} -2=4.5-2=2.5$

∴ Missing number(?) = 2.5

Hence, the missing number is equal to "2.5".