1 files changed, 3 insertions, 0 deletions
diff --git a/progs/a698.py b/progs/a698.py
new file mode 100644
index 0000000..47b03c5
--- /dev/null
+++ b/progs/a698.py
@@ -0,0 +1,3 @@
+def ap_sum(a,n,d):
+  total = (n * (2 * a + (n - 1) * d)) / 2
+  return total
+\ No newline at end of file