Question

If 10 n + 3.4^n+2 + is divisible by 9 then find k will mark brainliest

Answer 1

Answer : 5 - five

I hope it helps you...................

Answer 2

Step-by-step explanation:

10n+3.4^n+2+k is divisible by 9

=> digital sum of the number is 9 or its multiple

if n=1

=> 10+12+2+k = 24+k

digital sum = 6+k=> k = 9-6 = 3

if n=2

=> 20+48+2+k

digital sum = 7+k => k = 9-7 = 2

if n = 3

=> 30+192+2+k

digital sum = 8+k=> k = 9-8 = 1

if n=4

40+768+2+k

digital sum = 9+k => k = 9-9 = 0

if n= 5

50+3072+2+k

digital sum = 1+k => k = 9-1 = 8

if n= 6

=> 60+12288+2+k

digital sum = 2+k=> k = 9-2 = 7

from the above 0≤ k ≤8

or k= [ 0,8]

hope this helps you