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TN XII Math
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Objective type Questions and Answers
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Q)
In the set of real numbers
R
,
an operation
∗
is defined by
a
∗
b
=
√
a
2
+
b
2
.
Then the value of
(
3
∗
4
)
∗
5
is
(
1
)
5
(
2
)
5
√
2
(
3
)
25
(
4
)
50
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