编写VBSript程序，求P=1*2+3*4+5*6+7*8+9*10+11*12 10
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private sub form_click()
dim sum as single
dim item as single
dim i as integer,n as integer
sum=1
item=1
i=1
do while i<=20
item =item*i
sum = sum +item
i=i+1
loop
print " 1+2！+3！+……+20！=";sum
end sub
dim sum as single
dim item as single
dim i as integer,n as integer
sum=1
item=1
i=1
do while i<=20
item =item*i
sum = sum +item
i=i+1
loop
print " 1+2！+3！+……+20！=";sum
end sub
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