Lichrel number exists in base-10
24 is the largest number divisible by all numbers less than it’s square root
Test of Mathematics at 10+2 level Objective Solution
Understanding Number Theory At The 10+2 Level
RSA-1024 Number factor probable solution
Queen move till end (a number game)
Boat move (Chess) till end Game
Fibonacci numbers and Fibonacci primes
Three theorems on Fermat numbers
Test of Mathematics at 10+2 level Subjective Solution
ISI, CMI, Olympiads Study Material