- Longest dividing subsequence
- Number of subsequences with positive product
- Percentage change in Hemisphere volume if radius is changed
- Count of even and odd power pairs in an Array
- Python program for addition and subtraction of complex numbers
- Python program for multiplication and division of complex number
- Find the Nth digit from right in base B of the given number in Decimal base
- Given a number N in decimal base, find the sum of digits in any base B
- Bitwise AND of all even number up to N

- GATE | GATE CS 1997 | Question 9
- Multiplication of two complex numbers given as strings
- ISRO | ISRO CS 2017 | Question 67
- ISRO | ISRO CS 2011 | Question 13
- ISRO | ISRO CS 2018 | Question 31
- Puzzle | 1000 light bulbs switched on/off by 1000 persons passing by
- Bitwise AND of N binary strings
- Number of Subsequences with Even and Odd Sum
- Maximum XOR of Two Numbers in an Array
- Number of subsequences with positive product
- Number of pairs in an array having sum equal to product
- Count of even and odd power pairs in an Array
- Program to find X, Y and Z intercepts of a plane
- Bitwise AND of all even number up to N
- Bitwise OR( | ) of all even number from 1 to N
- Number of subsequences with negative product