Question

9. The mean of 1, 2, 22.... 231 lies in between
(a) 224 to 225
(b) 225 to 226
(C) 226 to 227
(d) 229 to 230

Answer 1

Answer:

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Answer 2

Answer:

(c)

Step-by-step explanation:

it form an GP of

a=1

r=2

So, ar^n-1=2^31

=> n=32

Mean => (1+2+2^2+2^3+……+2^31)/32

=> (1+2+2^2+2^3+…….+2^31)/2^5

=> Mean of 1,2,2^2,2^3….2^31 lies

between 2^26 to 2^27