Read the sentence to find out whether there is any error in it or not. The error, if any, will be in one part of the sentence. The number of that part (which has the error) is the answer. If there is no error, the answer is (4). Ignore errors of punctuation, if any. He is enough smart to(1)/ solve his problems(2)/ on his own(3)/. No error(4)?

Option 1 : He is enough smart to

The erroneous part is is 'He is enough smart to'.

• 'Enough' can be used both as an adjective and an adverb.
• If used as an adverb, it is placed after the adjective it modifies and if used as an adjective, it is used before the noun it modifies.
• Example,
  • She is intelligent enough to clear this exam in her first attempt.
  • I have enough time to study.
• Here, 'smart' is an adjective. We need an adverb to modify it, so should be placed after 'smart'.
• According to the rule and examples that are given above, 'smart enough to' will be used in the errorneous part of the sentence.
   

The Correct Sentence is: He is smart enough to solve his problems on his own.