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Tag Archives: Progressions

Given a Binary Tree consisting of N nodes, the task is to find the length of the longest path from any node to the bottom… Read More
Given an array arr[] consisting of N integers and an array Q[][2] consisting of M queries of the form {L, R}, the task for each… Read More
Given an array arr[] of N integers, the task is to find the count of all subarrays from the given array of at least size… Read More
Given two integers A, B which are any two terms of an Arithmetic Progression series, and an integer N, the task is to construct an… Read More
Given a binary tree, the task is to check whether the nodes in this tree form an arithmetic progression, geometric progression or harmonic progression.Examples:   Input:… Read More
The value of the expression 100∑i=2 1/logi100! is: (A) 0.01 (B) 0.1 (C) 1 (D) 10 Answer: (C) Explanation: The expression 100∑i=2 1/logi100! can be… Read More
Given an expression 13∑n=11/n which can also be written as a/13!  What would be the remainder if a is divided by 11? (A) 3 (B)… Read More
Four consecutive terms of an increasing arithmetic sequence are : x, 17, 3x – y2 – 2 and 3x + y2 – 30.  The sum… Read More
Calculate the sum of given series: log1010 + log10102 + … + log1010n (A) (B) (C) (D) Answer: (D)Explanation: Rewriting the expression as 1 +… Read More
If the average of the given 7 consecutive numbers is x. Now, the next three numbers are also added, what effect will it have on… Read More
A tennis ball is initially dropped from a building of height 180 m. After striking the ground, it rebounds (3/5)th of the height from which… Read More
For n positive integers, if their product is nn, then what will be their sum?  (A) Equal to n+(1/n) (B) Equal to n (C) A… Read More
Calculate the sum of given series: 1/3, 1/9, 1/27, 1/81…………….. (A) 1/4 (B) 1/3 (C) 1/2 (D) 1 Answer: (C)Explanation: The given series is an… Read More
Find the sum of series: 1, 3, 9, 27, 81, …………..39 (A) [(1-3^(10))]/(1-3) (B) 18 (C) 10 (D) 20 Answer: (A)Explanation: Sol: Sn=[a(1-rn)]/(1-r) =[1(1-310)]/(1-3) =[(1-310)]/(1-3)… Read More
Find Arithmetic Mean of series: 2, 2.5, 3, 3. 5, 4, 4. 5……….11 (A) 13/2 (B) 25/8 (C) 19 (D) 22/9 Answer: (A) Explanation: Arithmetic… Read More