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TS EAMCET 11-Sep-2020 Shift 2 Solved Paper

Section: Mathematics
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Question : 15 of 160
 
Marks: +1, -0
For n=1,2,3,........50, let A={
an
an
={
(−1)
n
2
(
n
2
),		if‌n‌is‌even
(−1)
n−1
2
(
n−1
2
),		if‌n‌is‌odd
} and B is the set of all distinct elements of A. The number of permutations all the elements of set B such that even integers are in increasing order, is
Validate
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