Database
[{var1:1,var2:1,var3:1},{var1:12342,var2:2,var3:5},{var1:1663,var2:3,var3:1},{var1:2234,var2:1,var3:1},{var1:2,var2:2,var3:1},{var1:2,var2:3,var3:5}]
Query
db.collection.aggregate([{$match:{var1:{$gte:200}}},{$project:{var1:1,var2:1,var3:1}},{$sort:{var1:1}},{$facet:{results:[{$skip:1},{$limit:25}],total:[{$count:"count"}]}}])