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Page 1 IBPS RRB Clerk Prelims 2020 (Solutions) Directions (1-5): 1. (b): 2. (d): 3. (c): 4. (b): 5. (a): 6. (c): 7. (d): 8. (a): 9. (b): Directions (10-12): C > E > A (86) > B > D 10. (d): 11. (a): 12. (c): Directions (13-16): 13. (a): S14. (e): 15. (d): 16. (b): Directions (17-21): 17. (b): 18. (c): 19. (d): 20. (b): 21. (c): Directions (22-23): 22. (b): 23. (c): Directions (24-27): 24. (b): 25. (c): 26. (d): 27. (b): 28. (c): Directions (29-33): 29. (c): 30. (b): 31. (a): 32. (d): 33. (c): 34. (c): 3 5 9 8 2 4 7 6 1 3 7 9 3 5 5 7 Directions (35-39): Months 7 th 12 th January A F February C B March E D 35. (c): 36. (b): 37. (b): 38. (c): 39. (b): 40. (a): REASONING ABILITY Page 2 IBPS RRB Clerk Prelims 2020 (Solutions) Directions (1-5): 1. (b): 2. (d): 3. (c): 4. (b): 5. (a): 6. (c): 7. (d): 8. (a): 9. (b): Directions (10-12): C > E > A (86) > B > D 10. (d): 11. (a): 12. (c): Directions (13-16): 13. (a): S14. (e): 15. (d): 16. (b): Directions (17-21): 17. (b): 18. (c): 19. (d): 20. (b): 21. (c): Directions (22-23): 22. (b): 23. (c): Directions (24-27): 24. (b): 25. (c): 26. (d): 27. (b): 28. (c): Directions (29-33): 29. (c): 30. (b): 31. (a): 32. (d): 33. (c): 34. (c): 3 5 9 8 2 4 7 6 1 3 7 9 3 5 5 7 Directions (35-39): Months 7 th 12 th January A F February C B March E D 35. (c): 36. (b): 37. (b): 38. (c): 39. (b): 40. (a): REASONING ABILITY 41. (b): Required percentage = 36-33 36 × 100 = 3 36 × 100 = 8 1 3 % 42. (a): Required average = 36+27+33 3 = 32 43. (e): Required ratio = 18 : 22 = 9 : 11 44. (b): Total passenger in C and E = 27 + 33 = 60 Required percentage = 60-36 36 × 100 = 24 36 × 100 = 66 2 3 % 45. (c): Required number of passengers = 18 + 27 + 22 = 67 46. (b): Pattern of series – 12 × 1 = 12 12 × 2 = 24 24 × 3 = 72 ? = 72 × 4 = 288 288 × 5 = 1440 47. (e): Pattern of series – 16 + 1.8 = 17.8 17.8 + 3.6 = 21.4 21.4 + 7.2 = 28.6 28.6 + 14.4 = 43 ? = 43 + 28.8 = 71.8 48. (b): Pattern of series – 12 × 0.5 + 1 = 7 7 × 1 + 1 = 8 8 × 1.5 + 1 = 13 ? = 13 × 2 + 1 = 27 27 × 2.5 + 1 = 68.5 49. (d): Pattern of series – 72 + 7 = 79 79 – 14 = 65 65 + 28 = 93 ? = 93 – 56 = 37 37 + 112 = 149 50. (b): Pattern of series – 8 × 1 + 1 = 9 9 × 2 + 1 = 19 19 × 3 + 1 = 58 58 × 4 + 1 = 233 233 × 5 + 1 = 1166 51. (a): Let present age of Q = t years So, present age of P = (t + 3) years ATQ – ?? +2 (?? +3)+2 = 4 5 t = 10 years So, Age of P after two years= (10 + 3) + 2 = 15 year 52. (c): Let total income of B = 100x Rs. So, total income of A = 100x × (1 + 20 100 ) = 120?? ???? . ATQ – (100x + 120x) × 30 100 = 26400 66x = 26400 x = 400 Rs. So, income of B = 400 × 100 = 40000 ???? . 53. (e): Let sum invested by man = Rs. X And, rate of interest = r% ATQ- ?? ×?? ×?? ?? ×?? ×(?? +4) = 1 2 ?? (?? +4) = 1 2 ? T = 4 54. (d): Let total work = 12 × 64 = 768 units Required women = 768 × 2 3 × 1 16 = 32 55. (e): Let length of train be ‘l’ meters ATQ – 72 × 5 18 = ?? 30 l = 600 meters Required time = 600 54× 5 18 = 40 sec 56. (a): ATQ – 14 × 6 - 10 × ?? = 44 10T = 40 T = 4 57. (c): Let cost price of article = 100x Rs. So, marked price of article = 100x × (1 + 50 100 ) = 150 ?? Rs. And, selling price of article = (150x – 50) Rs. ATQ – (150x – 50) – 100x = 50 50x = 100 x = 2 Rs. So, selling price of article = (150 × 2 - 50) = 250 ???? . 58. (e): ATQ – ?? (?? +800) = 3200 (6800-3200) X = 6400 59. (b): Let total initial mixture in vessel = 4x So, milk in vessel = 3x And water in vessel = x ATQ – (3x – 20 × 3?? 4?? ) - (?? - 20 × ?? 4?? ) = 70 Quantitative Aptitude Page 3 IBPS RRB Clerk Prelims 2020 (Solutions) Directions (1-5): 1. (b): 2. (d): 3. (c): 4. (b): 5. (a): 6. (c): 7. (d): 8. (a): 9. (b): Directions (10-12): C > E > A (86) > B > D 10. (d): 11. (a): 12. (c): Directions (13-16): 13. (a): S14. (e): 15. (d): 16. (b): Directions (17-21): 17. (b): 18. (c): 19. (d): 20. (b): 21. (c): Directions (22-23): 22. (b): 23. (c): Directions (24-27): 24. (b): 25. (c): 26. (d): 27. (b): 28. (c): Directions (29-33): 29. (c): 30. (b): 31. (a): 32. (d): 33. (c): 34. (c): 3 5 9 8 2 4 7 6 1 3 7 9 3 5 5 7 Directions (35-39): Months 7 th 12 th January A F February C B March E D 35. (c): 36. (b): 37. (b): 38. (c): 39. (b): 40. (a): REASONING ABILITY 41. (b): Required percentage = 36-33 36 × 100 = 3 36 × 100 = 8 1 3 % 42. (a): Required average = 36+27+33 3 = 32 43. (e): Required ratio = 18 : 22 = 9 : 11 44. (b): Total passenger in C and E = 27 + 33 = 60 Required percentage = 60-36 36 × 100 = 24 36 × 100 = 66 2 3 % 45. (c): Required number of passengers = 18 + 27 + 22 = 67 46. (b): Pattern of series – 12 × 1 = 12 12 × 2 = 24 24 × 3 = 72 ? = 72 × 4 = 288 288 × 5 = 1440 47. (e): Pattern of series – 16 + 1.8 = 17.8 17.8 + 3.6 = 21.4 21.4 + 7.2 = 28.6 28.6 + 14.4 = 43 ? = 43 + 28.8 = 71.8 48. (b): Pattern of series – 12 × 0.5 + 1 = 7 7 × 1 + 1 = 8 8 × 1.5 + 1 = 13 ? = 13 × 2 + 1 = 27 27 × 2.5 + 1 = 68.5 49. (d): Pattern of series – 72 + 7 = 79 79 – 14 = 65 65 + 28 = 93 ? = 93 – 56 = 37 37 + 112 = 149 50. (b): Pattern of series – 8 × 1 + 1 = 9 9 × 2 + 1 = 19 19 × 3 + 1 = 58 58 × 4 + 1 = 233 233 × 5 + 1 = 1166 51. (a): Let present age of Q = t years So, present age of P = (t + 3) years ATQ – ?? +2 (?? +3)+2 = 4 5 t = 10 years So, Age of P after two years= (10 + 3) + 2 = 15 year 52. (c): Let total income of B = 100x Rs. So, total income of A = 100x × (1 + 20 100 ) = 120?? ???? . ATQ – (100x + 120x) × 30 100 = 26400 66x = 26400 x = 400 Rs. So, income of B = 400 × 100 = 40000 ???? . 53. (e): Let sum invested by man = Rs. X And, rate of interest = r% ATQ- ?? ×?? ×?? ?? ×?? ×(?? +4) = 1 2 ?? (?? +4) = 1 2 ? T = 4 54. (d): Let total work = 12 × 64 = 768 units Required women = 768 × 2 3 × 1 16 = 32 55. (e): Let length of train be ‘l’ meters ATQ – 72 × 5 18 = ?? 30 l = 600 meters Required time = 600 54× 5 18 = 40 sec 56. (a): ATQ – 14 × 6 - 10 × ?? = 44 10T = 40 T = 4 57. (c): Let cost price of article = 100x Rs. So, marked price of article = 100x × (1 + 50 100 ) = 150 ?? Rs. And, selling price of article = (150x – 50) Rs. ATQ – (150x – 50) – 100x = 50 50x = 100 x = 2 Rs. So, selling price of article = (150 × 2 - 50) = 250 ???? . 58. (e): ATQ – ?? (?? +800) = 3200 (6800-3200) X = 6400 59. (b): Let total initial mixture in vessel = 4x So, milk in vessel = 3x And water in vessel = x ATQ – (3x – 20 × 3?? 4?? ) - (?? - 20 × ?? 4?? ) = 70 Quantitative Aptitude (3x – 15) – (x – 5) = 70 2x = 80 x = 40 So, initial mixture in vessel = 4x = 4 × 40 = 160 liters 60. (c): Let radius of circle be ‘r’ cm ATQ – 22 7 × ?? × ?? = 616 r = 14 cm = breath of rectangle Let length of rectangle be ‘l’ cm Perimeter of rectangle = circumference of a circle + 2 2(14 + l) = 2 × 22 7 × 14 + 2 2(14 + l) = 90 l = 31 cm 61. (d): Required difference = (80 + 100) – (70 + 90) = 20 62. (a): Total orders (all three items) received by R = (80 + 100 + 30) = 210 Total orders (all three items) received by Q = (40 + 70 + 90) = 200 Required percentage = 210-200 200 × 100 = 5% 63. (e): Total orders of item A & B received by P = 80 + 60 = 140 Total orders of item B & C received by Q = 70 + 90 = 160 Required ratio = 140 : 160 = 7 : 8 64. (b): Average number of orders of item B received by Q & R = 70+100 2 = 85 Required percentage = 85 80 × 100 = 106 1 4 % 65. (c): Required sum = 80 + 60 + 50 = 190 66. (e): 48 100 × 625× 4 3 =? ? ? = 400 67. (c): 64+324 97 =? ? = 4 68. (b): 4 ? × 2 = 256 2 4 ? = 64 4 ? = (4) 3 ? = 3 69. (c): 4 × ? = 512- 480 ? = 32 4 ? = 8 70. (e): ? + 432 – 206 = 550 ? = 550 – 226 ? = 324 71. (a): (?) 2 = 196 – 96 ? 2 = 100 ? ? = 10 72. (d): 40 100 × 400+ 300 100 ×? = 250 160 + 3 × ? = 250 ? = 90 3 = 30 73. (b): ÷ 7 = ? -180 ? = 183 74. (e): 24 – 12 + 27 = 36 + ? ?= 3 75. (b): 119 + 41 + 9 =? 2 ? = 13 76. (b): 12 100 × (? +100) = 18 ? = 150 – 100 ? = 50 77. (c): 11 11 + 9+? = 27 1 + 9 + ? = 27 ? = 17 78. (b): ? 2 + 20 = 36 ? 2 = 16 ? ? = 4 79. (d): ? = 9 1 3 + 7 1 2 - 5 1 6 - 6 1 3 ? = 9 + 7 - 5 - 6 ( 1 3 + 1 2 - 1 6 - 1 3 ) ? = 5 1 6 80. (c): 3 4 ×3 7×2 3 6×3 = 3 ? 3 ? = 3 4+14-18 3 ? = 3 0 ? = 0Read More
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