Respuesta :

Ujjwal11

12) Now,

n(U) = n.(A) + n.(B) + n(AnB) + n(AuB^_)

40 = 3x + 5 + 3x + 2 + 4 + x + 4

40 = 7x + 15

40 - 15 = 7x

◆ x = 5

◆ n.(A) = 3*5 + 5

= 20

◆ n.(B) = 3*5 + 2

= 17

◆ n(AuB^_) = 9

I hope you understand...

I hope it's help you...

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13) 27^x = 3^x+4

or, 3^3x = 3^x+4

or, 3x = x + 4

or, 3x - x = 4

or, 2x = 4

◆ x = 2

Thanks...♥♥

manishasharma168

Answer:

yaa nepali people ke handwriting kitni aachi hai

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