Question

Match the column I with their respective number of digits in the fractional part of that number in column II.

• A. $10$
• B. $0$
• C. $4$
• D. $2$

Answer 1

The number of digits in the fractional part of a number gets doubled when the number is squared.

$2^2=4$ ; no fractional part
$(3.03{)}^2=9.1809$ ; 4 digits in the fractional part
$(3.57097{)}^2=12.7518267409$ ; 10 digits in the fractional part
$(1.5{)}^2=2.25$ ; 2 digits in the fractional part