are multiple predicates same as boolean and

Hi all,
  Supposing I write following XPath expressions,

1) X[c1][c2]  or specifying generically, X[c1][c2][]...[cn]

2) X[c1 and c2]  or specifying generically, X[c1 and c2 ... and cn]

c1, c2 etc. are boolean expressions.

are the two forms (1 & 2) above exactly equivalent (i.e., will they
return the same nodeset/sequence)?. I think yes ... but just wanted to
confirm with the list.

if 1 & 2 are exactly equivalent, then what could be the rule of thumb
for using which form in certain scenarios?


-- 
Regards,
Mukul Gandhi