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rohitisog · Oct 1, 2022 · 42a4a9e · 42a4a9e
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diff --git a/19Day-SumOfSeries.sol b/19Day-SumOfSeries.sol
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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.5.0 <0.9.0;
+//Find the sum of the series 1 + x + x^2+ x^3+ .. + x^n
+contract Day1 {
+//Create a function expression(x,n) 
+    function expression(uint256 x, uint256 n) public pure returns (uint256) {
+        uint256 sm = 1;
+        uint256 m = 1;
+        for (uint256 i = 1; i <=n; i++) {
+             m = m * x;
+            sm = sm + m;
+
+        }
+        return sm;
+    }
+}