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RBI Grade B Officers Aug 2014 Paper
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© examsiri.com
Question :
128 of 200
Marks:
+1
,
-0
I
.
x
2
–
2
x
–
√
5
x
+
2
√
5
=
0
I
I
.
y
2
–
√
3
y
–
√
2
y
+
6
=
0
if x < y
if x
<
y
if x = y or the relation cannotbe established
if x
>
y
if x > y
Validate
Solution:
(4)
I
.
x
2
–
2
x
–
√
5
x
+
2
√
5
=
0
⇒
x
(
x
–
2
)
–
√
5
(
x
–
2
)
=
0
⇒
(
x
–
2
)
(
x
–
√
5
)
=
0
⇒
x
=
2
o
r
√
5
I
I
.
y
2
–
√
3
y
–
√
2
y
+
√
6
=
0
⇒
y
(
y
–
√
3
)
–
√
2
(
y
–
√
3
)
=
0
⇒
(
y
–
√
2
)
(
y
–
√
3
)
=
0
⇒
y
=
2
o
r
√
3
Clearly, x
>
y
© examsiri.com
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