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RRB NTPC Mains or Stage 2 Model Paper 4 with solutions
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© examsnet.com
Question : 1
Total: 120
What is the value of
2
+
√
2
+
1
2
+
√
2
−
1
2
−
√
2
?
2
2
−
√
2
4
+
√
2
2
√
2
Validate
Solution:
2
+
√
2
+
1
2
+
√
2
−
1
2
−
√
2
=
2
+
√
2
+
2
−
√
2
−
2
−
√
2
4
−
2
=
2
+
√
2
+
(
−
2
√
2
)
2
=
2
+
√
2
=
2
© examsnet.com
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