If X = {10, 11, 12……. 19} and ‘a’ represents any element of X, then write the set which satisfies the condition a – 2 = 11 , a $\in$ X

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Solution

X = {10, 11, 12……. 19}

a = 13 [13 $\in$ X and 13 – 2 = 11]

The required set = {13}

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