एक समस्या को हल करने में , एक विद्यार्थीप्रथम घात पद के गुणांक में त्रुटि करता है और मूलो के लिए - 9 और - 1 पाता है । दूसरा विद्यार्थी समीकरण के अचर पद में त्रुटि करता है और मूलों के लिए 8 और 2 पाता है, तो सही समीकरण क्या था ?

Directions: Read each sentence to find out whether there is any grammatical error in it. The error if any will be in one part of the sentence, the number of that part will be the answer. If there is no error, mark (5) as the answer. (Ignore errors of punctuation, if any.) 

Most people like to (1) / rest after a day's hard work (2)/ but he seemed to have (3)/ an inexhaustive supply of energy. (4) / No error. (5) 

In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.

I congratulated him ______ his promotion. 

Direction: In the question a sentence has been given in Active/Passive Voice. Out of the four alternatives suggested, select the one which best expressed the same sentence in Passive/Active Voice and mark your answer in the Answer Sheet.

It is impossible to do this.