What is the smallest prime number dividing the sum 3 22 5 12 a 3 b 11 c 5 d

ans is 2

3^22 the last digit will end in 9 ,bec the cyclicity of 3 is 4 so ,22/4 we get reminder to be 2 and therefore 3 ^2 is 9 and similarly the cyclicty of 5 is 1 so the last digit will be 5
and the sum will have a last digit as 4
ultimately the smallest digit prime num which will divide the sum which has last digit of 4 is 2 .
10 years agoHelpfull: Yes(9) No(0)
last digit of the sol is 4; so ans is 2
10 years agoHelpfull: Yes(6) No(1)
Easily we can see that ODD + ODD is EVEN.
So ans: 2
10 years agoHelpfull: Yes(3) No(0)
answer is 2
divide the problem into two parts 3^22 and 5^12
i)3/2=1 reminder
ii)5/2 =1 reminder
add both the reminders 1+1/2=0 reminder.
10 years agoHelpfull: Yes(3) No(1)
answer is e.3^22+5^12.
10 years agoHelpfull: Yes(2) No(9)

What is the smallest prime number dividing the sum 3^22 + 5^12?

a. 3

b. 11

c. 5

d. 2

e 3^22 + 5^12