Question

Options are here :-
(a) 6
(b) 8
(c) 5
(d) 7​

Answer 1

Answer:

c)7

7 is the answer and value of n.

2⁷-¹+2⁷+¹=2⁶+2⁸

=64+256

Answer 2

Answer:

(d) 7

Step-by-step explanation:

Try to put values of n given in option

you have to put each value of n.

n=7

2^n-1 + 2^n+1 = 320

2^7-1 +2^7+1

2^6 + 2^8

64 + 256

=320

- Abhay sir (M.sc., B.ed.)

(+91 9909713633)