Question

✌✌PLZZ PROVIDE COMPLETE SOLUTION✨✨

Answer 1

let n be 1 in both x and y then
x = 8-7-1
x = 0

y = 49

therefore option c is correct

Answer 2

Given :

X = 8ⁿ - 7n - 1

Y = 49( n - 1 )

n = { 1,2,3.......................}

By Trial and error method :

Put n = 1

X = 8¹-7-1

   = 8-8

   = 0

Y = 49( n - 1 )

   = 49 ( 1 - 1 )

   = 49 . 0

   = 0

Putting n = 2

X = 8² - 7.2 - 1

  = 64 - 15

  = 49

Y = 49 ( 2 - 1 )

  = 49.1

  = 49

Clearly X ⊂ Y

Answer :

OPTION B

Hope it helps !

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