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if set B ={1,4,8,16,32,64} then which of...

if set B ={1,4,8,16,32,64} then which of the following is true? If not then mention why?
(i) `4 in B `
(ii) ` 16 in B `
(iii) `2 in B`
( iv) ` 164 in B `

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(i) True
(ii) True
(iii) False, as `2 in B`
(iv) True, as `164 in B`
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