1. 

What will come in place of question mark in the following equation ?
54.(?)3 + 543 + 5.43 = 603.26

A. 6
B. 1
C. 9
D. 8

Answer: Option D

Explanation:

Let x + 543 + 5.43 = 603.26.

Then, x = 603.26 - (543 + 5.43)

= 603.26 - 548.43

= 54.83

Missing digit = 8