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Problems based on Numbers Test 2
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© examsnet.com
Question : 1
Total: 40
The value of
√
7
−
√
7
+
√
7
−
√
7
−
.
.
.
∞
is:
1
2
3
4
Validate
Solution:
Let
x
=
√
7
−
√
7
+
x
Squaring both sides,
x
2
=
7
−
√
7
+
x
By using all the options one, by one only 2 satisfies.
(
2
)
2
=
7
−
√
7
+
2
4
=
7
−
√
9
4
=
7
−
3
4
=
4
© examsnet.com
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