23+215+235+263+299+2143.-数学

题目简介

23+215+235+263+299+2143.-数学

题目详情

2
3
+
2
15
+
2
35
+
2
63
+
2
99
+
2
143
题型:解答题难度:中档来源:不详

答案

class="stub"2
3
+class="stub"2
15
+class="stub"2
35
+class="stub"2
63
+class="stub"2
99
+class="stub"2
143

=1-class="stub"1
3
+class="stub"1
3
-class="stub"1
5
+class="stub"1
5
-class="stub"1
7
+class="stub"1
7
-class="stub"1
9
+class="stub"1
9
-class="stub"1
11
+class="stub"1
11
-class="stub"1
13

=1-class="stub"1
13

=class="stub"12
13

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