Question Bank  Number theory  Sibanand Pattnaik

@sibanand_pattnaik counting all the prime numbers from 23 to 198

@sibanand_pattnaik A=15
B=1
A+4B= 19

@sibanand_pattnaik 18000=2^43^25^3
=3!

@sibanand_pattnaik x^2+x+1

@sibanand_pattnaik r= 3, 34, 65

@sibanand_pattnaik 10^×/13
euler of (13)=12
we know 10^12/13=1
thus x can take multiple of 12, which is 12 to 192 which is 16 values .

@sibanand_pattnaik 8
458
916
91
182
364
36
72
144
14

@sibanand_pattnaik 7, 11, 17

@sibanand_pattnaik a=21
b=15
2115=6

@sibanand_pattnaik 500th digit 17999

@sibanand_pattnaik Ans is 9

@sibanand_pattnaik b18081