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The function f1 and f2 are defined as fo...

The function `f_1` and `f_2` are defined as follows : `f_1 = a! + b! and f_2 = a^a + b^b` for a, b > 1 and a, b in N` then the correct relation is :

A

`f_1 lt f_2`

B

`f_1 = f_2`

C

`f_1 gt f_2`

D

can't say

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The correct Answer is:
A
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