1. Find the total Number of Digits in (N!)N
  2. Count ordered pairs of positive numbers such that their sum is S and XOR is K
  3. Count pairs (i,j) such that (i+j) is divisible by A and B both
  4. Minimum Bitwise AND operations to make any two array elements equal
  5. Minimum number of segments required such that each segment has distinct elements
  6. Check if there exists any sub-sequence in a string which is not palindrome
  7. Check if suffix and prefix of a string are palindromes
  8. All possible co-prime distinct element pairs within a range [L, R]
  9. Check whether a binary string can be formed by concatenating given N numbers sequentially
  10. Count numbers whose difference with N is equal to XOR with N
  11. Count unordered pairs (i,j) such that product of a[i] and a[j] is power of two
  12. Count number of ordered pairs with Even and Odd Sums
  13. Sub-strings having exactly k characters that have ASCII value greater than p
  14. Count number of ordered pairs with Even and Odd Product
  15. All possible numbers of N digits and base B without leading zeros
  16. Maximum value of XOR among all triplets of an array
  17. Check if it is possible to rearrange a binary string with alternate 0s and 1s
  18. Check if there is any pair in a given range with GCD is divisible by k
  19. Convert all lowercase characters to uppercase whose ASCII value is co-prime with k
  20. Find two numbers whose sum and GCD are given
  21. Probability of getting two consecutive heads after choosing a random coin among two different types of coins
  22. Sum of first N natural numbers which are not powers of K
  23. Count pairs of numbers from 1 to N with Product divisible by their Sum
  24. Count pairs in an array such that LCM(arr[i], arr[j]) > min(arr[i],arr[j])
  25. Minimum value that divides one number and divisible by other
  26. Find probability that a player wins when probabilities of hitting the target are given
  27. Greatest divisor which divides all natural number in range [L, R]
  28. Composite XOR and Coprime AND
  29. Minimum operations of the given type required to make a complete graph
  30. Count number of trailing zeros in (1^1)*(2^2)*(3^3)*(4^4)*..
  31. Count all Prime Length Palindromic Substrings
  32. Arrange first N natural numbers such that absolute difference between all adjacent elements > 1
  33. Increasing sequence with given GCD
  34. Number of Simple Graph with N Vertices and M Edges
  35. Generate minimum sum sequence of integers with even elements greater
  36. Choose points from two ranges such that no point lies in both the ranges
  37. Maximize the sum of products of the degrees between any two vertices of the tree
  38. Modify a binary array to Bitwise AND of all elements as 1
  39. Count all possible N digit numbers that satisfy the given condition
  40. Ways to Remove Edges from a Complete Graph to make Odd Edges
  41. Minimum LCM and GCD possible among all possible sub-arrays
  42. Find smallest number K such that K % p = 0 and q % K = 0
  43. Generate array with minimum sum which can be deleted in P steps
  44. Count number of trailing zeros in Binary representation of a number using Bitset
  45. Maximum money that can be withdrawn in two steps
  46. Maximum length of subarray such that sum of the subarray is even
  47. Find number of magical pairs of string of length L
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