8th Class Mathematics Squares and Square Roots Question Bank Squares and Square Roots

The greatest 6-digit number, which is a perfect square is __.

A) 998001

B) 995001

C)        997001

D)        996001

Correct Answer: A

Solution :

Greatest 6-digit number is 999999.

	999
9	\[\begin{align} & \text{ }\overline{99}\text{ }\overline{99}\text{ }\overline{\text{99}} \\ & -\text{ }81 \\ \end{align}\]
189	\[\begin{align} & \text{ 1899} \\ & \text{-1701} \\ \end{align}\]
1989	\[\begin{align} & \text{ 19899} \\ & \text{-17901} \\ \end{align}\]
	1998

\[\therefore \] Greatest 6-digit perfect square number \[=999999-1998=998001\]