self Maths Puzzle

Evulate.

∫e^e^e^e^x. e^e^e^x. e^e^x. e^x.dx

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self Other Question

by 10 minutes past 5, the hour hand has turned through? there are number marked on pages of a book by mistake a same number is marked on pages twice and the sum of all page numbers is found to be 1000 now, find the number that may be marked twice

option
a) 40
b) 15
c) 25
d) None of these