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JEE Main 20 July 2021 Shift 1 Solved Paper

Section: Mathematics
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Question : 62 of 90
 
Marks: +1, -0
Let a be a positive real number such that
a
∫
0
ex−[x]dx=10e−9 where [x] is the greatest integer less than or equal to x. Then a is equal to :
[20 Jul 2021 Shift 1]
Validate
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