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diff --git a/647/CH9/EX9.20/Example9_20.sce b/647/CH9/EX9.20/Example9_20.sce
new file mode 100755
index 000000000..eb527625c
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+++ b/647/CH9/EX9.20/Example9_20.sce
@@ -0,0 +1,13 @@
+clear;
+clc;
+
+// Example: 9.20
+// Page: 367
+
+printf("Example: 9.20 - Page: 367\n\n");
+
+// Mathematics is involved in proving but just that no numerical computations are involved.
+// For prove refer to this example 9.20 on page number 367 of the book.
+
+printf(" Mathematics is involved in proving but just that no numerical computations are involved.\n\n");
+printf(" For prove refer to this example 9.20 on page 367 of the book.");
+\ No newline at end of file