Study the given pattern carefully and select the number that can replace the question mark (?) in it.

Correct option is B

Given,

The logic follows here:

Upper side term:( 1st term × 2nd term) ÷2-1 = 1st term lower side

​→ $$(4×4)÷2−1=(16÷2)−1=8−1=7$$ (1st lower term).

→ $$(4×2)÷2−1=(8÷2)−1=4−1=3$$  (2nd lower term).

→ $$(2×9)÷2−1=(18÷2)−1=9−1=8$$ ( 3rd lower term).→ Missing Number

→ $$(9×4)÷2−1=(36÷2)−1=18−1=17$$ ( 4th  lower term).

Calculations confirm that the missing number is 8

The correct option is: Option B: 8