Madhya Pradesh Police Exam Model Paper 7

Given
Number = 58976
Concept Used-
The polynomial of any number ending with 6 will end in 6.
∵ The unit digit in 6n is always 6. (for all integral values of n)
Ex- $6^1=6,6^2=36,6^3=216$
Calculation-
${58976}^2$
Since the number ends with 6 and n = 2 is an integral value.
∴ The unit digit in the square of 58976 = 6