change default options for square_root_arithmetic generator

diff --git a/lib/mint/generator/square_root_arithmetic.rb b/lib/mint/generator/square_root_arithmetic.rb
index 8dc54c1..0d2c6f3 100644 (file)
--- a/lib/mint/generator/square_root_arithmetic.rb
+++ b/lib/mint/generator/square_root_arithmetic.rb
@@ -38,10 +38,10 @@ module Mint::Generator
     private
 
     option :min,             0
-    option :max,             30
-    option :operators,       %w[ + - ]
+    option :max,             20
+    option :operators,       %w[ * ]
     option :use_power,       false
-    option :single_term_min, 1
+    option :single_term_min, 2
     option :single_term_max, 2
 
     def operand