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A={x^(2)-9x+20=0}, B={x ^(2)+13 x + 42...

`A={x^(2)-9x+20=0},`
`B={x ^(2)+13 x + 42=0}`
`C={x^(2) -3x-70=0}and ` the universal set `X ={-7,-6,4,5,10,12}, ` then `Ann(BnnC)=`

A

`{-7,-6,4,5,10}`

B

`{4,5,10}`

C

`{-7,4,5,10}`

D

`phi`

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The correct Answer is:
D
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TARGET PUBLICATION-SETS, RELATIONS AND FUNCTIONS-CRITICAL THINKING
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