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#| BEGIN (Write your solution here) |#
(define (make-accumulator sum)
(lambda (val)
(begin
(set! sum (+ sum val))
sum
)
)
)
#| END |#
#| BEGIN (Write your solution here) |#
(define (make-accumulator sum)
(lambda (val)
(begin
(set! sum (+ sum val))
sum
)
)
)
#| END |#