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Write the set of the letter of the word ...

Write the set of the letter of the word 'ALLAHABAD'. Also find the number of subsets of this set.

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There are 5 different letters in the word ALLAHABAD i.e., A,L,H,B,D, then set is {A, B, D, H, L}, then number of subsets = `2^(5) = 32` and all subsets are
`phi, {A},{B},{D},{H},{L},{A,B},{A,D},{A,H},{A,L},{B,D}`,
`{B,H},{B,L},{D,H},{D,L},{H,L},{A,B,D},{A,B,H}`,
`{A,B,L},{A,D,H},{A,D,L},{A,H,L},{B,D,H},{B,D,L}`
`{B,H,L},{D,H,L},{A,B,D,H},{A,B,D,L},{B,D,H,L}`
`{A,D,H,L},{A,B,H,L},{A,B,D,H,L}`
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