Find the multiplicative inverse of the following in an efficient manner. Show all steps x= 7 mod 26 x=19 mod 999

Evaluate 363/2 in two ways. Which way is easier? The easier way is to compute the root first, and then find the index. The easier way is to compute the index first, and then find the power. The easier way is to compute the power first, and then find the root. The easier way is to compute the base first, and then find the root. O The easier way is to compute the root first, and then find the power.

solve this congruence with the help of modular inverses: 89x = 2 (mod 232)

501 a. Find 200' mod 17 b. Find inverse of 7 mod 31.