## LR questions

How to solve this example prvided in your site: Example3 Directions for 8 to 10: Mr. Doubt fire has an unique way of attempting the question paper having 50 Qs. He starts from question 1 and attempts all questions which are terms of the A. P with a common difference of 3 in the forward direction and 3 in the reverse direction. If he reaches a stage when he cannot attempt any more question he starts in the reverse direction with the first unanswered question. He repeats the same process and when he reaches a stage when he cant process any further, he reverses his direction again starting with the first unanswered question 8. Which is the 20th question he answers? (A) 50 (b) 48 (c) 47 (d) 44 9. Which is the last question that he answers if he attempts all the 50 questions? (a) 50 (b) 49 (c) 48 (d) 3 10. How many times does he reverse his direction? (a) 3 (b) 4 (c) 5 (d) 6 ANSWERS 8. (d) 9. (b) 10.(a)

## My way

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 50 47 44 41 38 35 32 29 26 23 20 17 14 11 8 5 2 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 From the above sequence you can get all the answers. Though its not the right way of attempting the Qs. Just to make things easier I wrote it. 20th term is 44 Last Qs he answers is 48 (ok the answer is wrong) 3 times he reverses his direction you should attempt the Qs like a=1 and d=3 and max value possible is 50 so 17th term ll be 49 and after that it ll reverse the direction from number 50 then 20th term is 44 similarly you can answer ii and iii bit