Problems
The number of even n-digit numbers 2#9945
Very easy · For Beginners
The number of odd n-digit numbers is 3#9946
Easy · For Beginners
The number of even n-digit numbers 3#9947
Easy · For Beginners
The number of odd n-digit numbers#9948
Medium · For Beginners
The number of even n-digit numbers is 4#9949
Easy · For Beginners
Number of complete squares#9950
Very easy · Math
The number of powers of two#9951
Very easy · Binary Search
The number of perfect squares 2#9952
Very easy · For Beginners
The number of powers of two is 2#9953
Very easy · Binary Search
The number of complete squares 3#9954
Very easy · Math · Implementation
The number of powers of two is 3#9955
Very easy · Binary Search
The largest even number in the array#9956
Very easy · Implementation
The smallest negative in the array#9957
Very easy · Brute force
The arithmetic mean of negative odd numbers in the array#9958
Very easy · Implementation
Multiples of 5#9959
Very easy · Implementation
The smallest even#9960
Very easy · Implementation · Brute force
Permutations of n by k#9961
Very easy · Brute force
All subsets#9962
Easy · Brute force · Combinatorics
Length of the segment#9963
Very easy · Geometry
Sequence 1#9964
Very easy · Implementation
Sequence 2#9965
Very easy · For Beginners
Sequence 3#9966
Very easy · For Beginners
Sequence 4#9967
Very easy · Implementation
Sequence 5#9968
Very easy · Math
Sequence 6#9969
Very easy · Math