## 60 Numeric Problem to strengthen your Competitive Coding skills

Competitive programming is a coding sport in which people compete to programme according to given requirements over the Internet or a local network.

Winning competitions are very valuable for a developer to get selected in the worlds most popular companies, you say it FAANG.

→ You should read and try to learn each of these question, if:

✪ Are you planning to be a competitive coder?
✪ But not sure how to start?

#### This Article Was Originally Posted on The Beginning of The Peak Newsletter. You will find 15 More Question by Subscribing to it.

Now Without any further waiting, Let’s Start the article:

## Questions on Geometry

1. Find distance between 2 points
2. Given 2 sides of a right angle triangle, find the 3rd
3. Area of a right angle triangle
4. Area of a Square
5. Area of a Rectangle
6. Area of a Circle
7. Volume of a Sphere
8. Volume of a Cube

## Questions on Matrix

1. Find the determinant of a matrix
2. Find Scalar Multiplication of a matrix
3. Find addition/subtraction of a matrices
4. Find the transpose of a matrix
5. Find if 2 matrices are orthogonal
6. Find inverse of a 2×2 and 3×3 matrix

## Questions on Numbers

1. Find a digit at a specific place in a number
2. Find count of digits in a number
3. Find the largest digit
4. Find the 2nd largest digit
5. Find the smallest digit
6. Find the 2nd smallest digit
7. Find generic root (sum of all digits) of a number
8. Reverse the digits in a number
9. Rotate the digits in a number
10. Is the number a palindrome?
11. Find the binary, octal and hexadecimal equivalent
12. Convert a binary, octal and hexadecimal to a decimal
13 Find sum of ‘n’ numbers
13. Find the factorial of a number
14. Find the exponentiation of a number
15. Check if a number is perfect square
16. Find a number in an AP sequence
17. Find a number in a GP sequence
18. Find a number in fibonacci sequence
19. Check number divisibility by 2, 3, 5, 9
20. Check if a number is primary or not
21. Given a number, print all primes smaller than it
22. Check if a number is circular prime or not
23. Find all prime factors of a number
24. Find the GCD of 2 numbers
25. Find the LCM of 2 numbers

## Questions on Sets

1. Find Union of 2 sets
2. Find Intersection of 2 sets
3. Find the Difference of 2 sets
4. Find the Symmetric Difference of 2 sets
5. Find if a set is subset/superset of another set
6. Find if 2 sets are disjoints

## Questions on Vector

1. Find Scalar Multiplication of a vector
2. Find addition/subtraction of vectors
3. Find dot product of 2 vectors
4. Find cross product of 2 vectors

## Questions on Matrix

1. Find the determinant of a matrix
2. Find Scalar Multiplication of a matrix
3. Find addition/subtraction of a matrices
4. Find the transpose of a matrix
5. Find if 2 matrices are orthogonal
6. Find inverse of a 2×2 and 3×3 matrix

## Questions on Sets

1. Find Union of 2 sets
2. Find Intersection of 2 sets
3. Find the Difference of 2 sets
4. Find the Symmetric Difference of 2 sets
5. Find if a set is subset/superset of another set
6. Find if 2 sets are disjoints

## Questions on Special Numbers

1. Strong Number
2. Perfect Number
3. Armstrong Number
5. Kaprekar Number
6. Lychrel Number
7. Narcissistic Decimal Number
8. Lucus Number
9. Catalan Number
10. Duck Number

### Thanks For Reading.

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Source: DEV Community

December 1, 2021
Category : News

### Senior Software Developer

Creator of @LzoMedia I am a backend software developer based in London who likes beautiful code and has an adherence to standards & love's open-source.