Question

If A=15,B=16 and C=17, then which is not true?
a) (A+B)+C=A+(B+C)
b) (A×B)×C=A×(B×C)
c) A+(B×C)=(A×B)+(B×C)
d) A× (B+C) = (A×B)+(A×C)
e) None of these​

Answer 1

e12345566777888999999999

Answer 2

c) A + ( B × C ) = ( A × B ) + ( B × C )

Let's check ...

In the question it is asked that which is NOT true

A = 15 , B = 16 , B = 17 ...

a) (A+B)+C=A+(B+C)

( 15 + 16 ) + 17 = 15 + ( 16 + 17 )

31 + 17 = 15 + 33

48 = 48

This is true , so this isn't the answer ...

b) (A×B)×C=A×(B×C)

( 15 × 16 ) × 17 = 15 × ( 16 × 17 )

240 × 17 = 15 × 272

4080 = 4080

This is true , so this isn't the answer ...

c) A+(B×C)=(A×B)+(B×C)

15 + ( 16 × 17 ) = ( 15 × 16 ) + ( 16 × 17 )

15 + 272 = 240 + 272

287 = 512

This is not true , so this is the correct answer ...

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