All Assam Grade IV exam question and answer part I 1. If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30 hours ? A. 20 B. 30 C. 35 D. 24 Ans: D. 24 hours 2. The cost of metres of a particular quality of cloth is 210. What is the cost of 13 metres of cloth of the same type ? A. 420 B. 645 C. 546 D. 424 Ans: C. 546. 3. When a two-digit number is reserved, a new two-digit number is formed which is 63 more than the original number. What is the original number ? A. 28 B. 25 C. 29 D. 36 Ans: C. 29. 4. What is the capital of Sri Lanka ? Ans: Colombo 5. Who is the author of the book, 'The Discovery of India' ? Ans: Jawaharlal Nehru 6. The Sun of two numbers is 74. One of the numbers is 10 more than the other. What are the numbers ? A. 18 and 28 B. 20 and 30 C. 24 and 34 D. 32 and 42 Ans: D. 32 and 42 7. Who among the following leaders was not a President of India ? A. Neelam Sanjiva Reddy B. Giani Zail Sin