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Mathematics
Mathematics
Problem
A student draws
O
A
=
1
OA = 1
O
A
=
1
unit on the number line. At
A
A
A
she erects a perpendicular
A
B
=
1
AB = 1
A
B
=
1
unit and joins
O
B
OB
O
B
. Keeping centre
O
O
O
and radius
O
B
OB
O
B
, she marks point
P
P
P
on the number line. Which number does
P
P
P
represent? a)
5
\sqrt5
5
b)
4
\sqrt4
4
c)
2
\sqrt2
2
d)
3
\sqrt3
3
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