## Sum of all odd natural numbers in range L and R

Given two integers L and R, the task is to find the sum of all odd natural numbers in range L and R inclusive. Examples:… Read More »

- Sum of the elements from index L to R in an array when arr[i] = i * (-1)^i
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- Sum of all odd natural numbers in range L and R
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- Program to find the Nth term of the series 0, 5, 14, 27, 44, ........
- Find the sum of all multiples of 2 and 5 below N
- Find the sum of n terms of the series 1,8,27,64 ....
- Sum of the first N terms of the series 5,12, 23, 38....
- Sum of square of first n even numbers
- Find the sum of series 3, 7, 13, 21, 31....
- Sum of first N terms of Quadratic Sequence 3 + 7 + 13 + ...

Given two integers L and R, the task is to find the sum of all odd natural numbers in range L and R inclusive. Examples:… Read More »

Given a range L and R, the task is to find the sum of all natural numbers in range L to R. Examples: Input: L… Read More »

Given two integers and and an array arr[] every element of which at index is calculated as arr[i] = i * (-1)i. The task is… Read More »

Given a number N, the task is to find the sum of all the multiples of A and B below N. Examples: Input:N = 11,… Read More »

Given two integers and . The task is to find the sum of the series 1/a + 2/a2 + 3/a3 + … + n/an. Examples:… Read More »

Given a number N. The task is to find the sum of all multiples of 2 and 5 below N ( N may be up… Read More »

Given a number N. The task is to find the sum of all those numbers from 1 to N that are divisible by 2 or… Read More »

Given a series of natural numbers divided into groups as: (1, 2), (3, 4, 5, 6), (7, 8, 9, 10, 11, 12), (13, 14, 15,… Read More »

Given an integer N. The task is to find the sum upto N terms of the given series: 3, -6, 12, -24, … upto N… Read More »

Given an integer N. The task is to find the sum upto N terms of the given series: 2×3 + 4×4 + 6×5 + 8×6… Read More »

Given a quadratic series as given below, the task is to find sum of first n terms of this series. Sn = 3 + 7… Read More »

Given a number x and n, the task is to find the sum of the below series of x till n terms: Recommended: Please try… Read More »

Given a number n, the task is to find the sum of the below series upto n terms: 12 – 22 + 32 – 42… Read More »

Given a positive integer n, the task is to find the value of F1 – F2 + F3 -……….+ (-1)n+1Fn where Fi denotes i-th Fibonacci… Read More »

Given a number N, the task is to find units place digit of the first N natural numbers factorials, i.e. 1!+2!+3!+….N! where N<=10e18. Examples: Input:… Read More »