Question

Q15. The expression 7⁹ + 9⁷ is divisible by :

(a) 16
(b) 64
(c) both (a) & (b)
(d) none of these​

Answer 1

b) 64

7⁹ + 9⁷ is divisible by 64

=705,259

Steps:-

=>(7^9+9^7)/64

=>7^9-40,353,607

=>9^7=4,782,969

=>7^9+9^7=45,136,576

=>45,136,576/64-705,259

Hope it helps you!!

Answer 2

Answer:

(b)64 is the answer.

Hope.it helps