Or using Raul's further improvement to consolidate some parentheses

    (+/@#~ 0 = 5&|)@(100+i.) 900
98550

Cheers, bob

> On Jan 16, 2018, at 9:20 PM, robert therriault <[email protected]> wrote:
> 
> Hi Skip,
> 
> I like using @: instead of [: and throwing a hook in shortens things a little 
> bit by getting rid of one ] and 5&| gets rid of another.
> 
> +/@:(#~ 0 = 5&|)@(100+i.900)"_
> 
> or if you were willing to use 900 as the argument to the tacit verb
> 
> +/@:(#~ 0 = 5&|)@(100 + i.) 900
> 
> which in addition to being shorter strikes me as a little more elegant
> 
> Cheers, bob
> 
>> On Jan 16, 2018, at 8:39 PM, Skip Cave <[email protected]> wrote:
>> 
>> [: ([: +/ ] #~ 0 = 5 | ]) (100+i.900)"_
> 
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