Conversion of hexadecimal number 1D7F16 to a decimal number is

Answer: Option A

We have a number say 1D7F₁₆ in hexadecimal system, now we have to convert it into decimal equivalent.
First make its Binary.
(1D7F)₁₆ = (1110 101111111)₂
(1D7F)₁₆ = (1 × 16³) + (13 × 16²) + (7 × 16¹) + (15 × 16⁰)
               = (7551)₁₀