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  • 1000 Most Important Simplification Questions

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    1000 Most Important Simplification Questions eBook For IBPS RRB/PO/CLERK

    Directions (Q. 1-10): What approximate value should come in place of question mark (?) in the following questions? 1). 90.05 + 281 4 151.06 = 3? a) 27 b) 343 c) 216 d) 729 e) 243 2). 17.982 (4.05)2 90.11 4.98 = ? a) 396 b) 336 c) 242 d) 325 e) 365 3). 80.04% of 150.16 + 60.02% of 50.07 = ? a) 150 b) 125 c) 210 d) 175 e) 140

    4). 628 17.996 15.04 = ? a) 30 b) 10 c) 5 d) 20 e) 15 5). (1/8) 121 + (1/5) 76 - ? = 25 a) 5 b) 45 c) 15 d) 10 e) 25 6). (28.07 4.97 + 15 6.05) / [(7.03)2 + 256.10 + 13.0001] = ? a) 2 b) -2 c) 3 d) 6 e) 4 7). 849 of (11/16.13) of (441.26 / 20.98) (17.13 / 319.85) = ?

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    a) 238000 b) 201300 c) 234500 d) 231000 e) 213000 8). [(14640) + ? ] = 13 a) 2400 b) 2916 c) 2305 d) 2210 e) 2350 9). 17.156 (864.63 356.34) = ? 6909.8003 a) 15782 b) 15802 c) 15402 d) 15852 e) 15560 10). 4567.8 (221 9.7) = 5059 - ? a) 2590 b) 2409 c) 2380 d) 2700 e) 2485 Solution With Answer Key: 1). D) 3? = 90.05 + 281 4 - 151.06 90 = 90 + 280 4 - 151 = 90 + 70 - 151 = 9 ? = 9 x 9 x 9 = 729 2). E) ? = (18)2 (4)2 90 5 = (4.5)2 18 = 20.25 x 18 = 364.5 = 365 3). A)

    ? = 80.04% of 150.16 + 60.02% of 50.07 = 80% of 150 + 60% of 50 = 80 x 1.5 + 60 x 0.5 = 120 + 30 = 150 4). A) ? = 628 x 17.996 15.04 = 625 18 15 = 25 18 15 = 30 5). A) (1/8) x 121 + (1/5) x 76 - ? =25 or, ? = (1/8) x 120 + (1/5) x 75 - 25 = 15 + 15 25 = 5 6). C) ? = (28.07x4.97 + 15x6.05) /[ (7.03)2 + 256.10 +13.0001] ? = (28 x 5 + 15 x 6) / [(7)2 + 256 + 13] =(140+90) / (49+16+13) = 230 / 78 7). D) ? = 849 11/16.13 441.26/20.98 17.13/319.85 = 850 11/16 441/21 320/17 = 50 11 21 20 = 231000 8). C) 13 = [(14640) + ? ] Squaring both sides or, 169 = {[(14640) + ? ]} 2 = (14640) + ? or, 169 = (14640) + ? = 121 + ? or, ? = 169 121 = 48 ? = (48)2 = 2304 = 2305 9). E) ? = 17 x (865 356) + 6910 = 8653 + 6910 = 15563 = 15560 10). D)

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    ? = 5059 - 4567.8 + (221 x 9.7) = 5060 - 4570 + (221 x 10) = 5060 4570 + 2210 = 7270 - 4570 = 2700 Directions (Q. 11-15): What approximate value should come in place of question mark(?) in the following questions? (You are not expected to calculate the exact value). 11). (13.073)2 + (29. 103)2 + (33.983)2 + (36.9653)2 = ? a) 3660 b) 4535 c) 3365 d) 3445 e) 3540 12). (1763.739) (2400) 342.8998 + 1082.98 = ? a) 1090 b) 1120 c) 1210 d) 1075 e) 1009 13). 3? 31.96 + 103.98 12.9765 90.954 13.003 = 585.0138 a) 2390 b) 2350 c) 2400 d) 2200 e) 2105 14). 598% of 586 + 639% of 634.793 3285.998 = ? a) 4280 b) 4400 c) 4100 d) 4180 e) 4380

    15). 38.93? + 5625 + 7920 + ? = 163.9963 9.873 a) 1780 b) 1600 c) 1580 d) 1360 e) 1680 Directions (Q. 16-20): What will come in place of question mark (?) in the following questions? 16). 8743 + 486 18 148 = ? a) 13729 b) 12739 c) 12729 d) 13279 e) None of these 17). [(135)2 15 39] ? = 6052 a) 15.19 b) 16.18 c) 17.18 d) 19 e) None of these 18). 6348 + 8515 695 - ? = 4312 + 2162 a) 7394 b) 7943 c) 7439 d) 7440 e) 7694 19). 1272 ? = 1382 956 214 a) 6 b) 8 c) 16 d) 18 e) 21

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    20). 1037 10-33 = 10? a) 4 b) 7 c) 6 d) 5 e) None of these Explanation With Answer Key: 11). E) ? = (13.073)2 + (29.103)2 + (33.983)2 + (36.9653)2 = (13)2 + (29)2 + (34)2 + (37)2 = 169 + 841 + 1156 + 1369 = 3535 = 3540 12). A) ? = 1763.739 x 2400 342.8998 +1082.98 = 1764 (2401 / 343) + 1083 = 42 (49/343) + 1083 = 6 + 1083 = 1089 = 1090 13). D) 3? X 31.96 + 103.98 12.9765 - 90.954 x 13.003 = 585.0138 or, 3? x 32 + 104 x 13 - 91 x 13 = 585 3? x 32 + 13(104 - 91) = 585 or, 3? x 32 + 169 = 585 3? = (585-169) / 32 = 13 ? = (13)3 = 2197 = 2200 14). A) ? = 598% of 586 + 639% of 634.793 - 3285.998 = 600% of 586 + 640% of 635 - 3286 = 3516 + 4064 - 3286 = 4294 = 4280 15). D) 38.93 ? + 5625 + 7920 + ? = 163.9963 x 9.873 or, 39? + 5625 + 7921 + ? = 164 x 10 or, 40? +164 = 1640 or, ? = 1476/40 = 37 ? = (37)2 = 1369 = 1360

    16). B) ? = 8743 + 486 18 x 148 = 8743 + 27 x 148 = 8743 + 3996 = 12739 17). A) [(135)2 15 x 39] ? = 60 x 52 or, [135 (135/15) 39] ? = 3120 or, 47385 ? = 3120 ? = 47385 / 3120 = 15.19 18). E) 6348 + 8515 - 695 - ? = 4312 + 2162 or, 14168 - ? = 6474 or, ? = 14168 - 6474 = 7694 19). A) 1272 / ? = 1382 - 1170 or, 1272/? = 212 ? = 1272 / 212 = 6 20). A) 10? = 1037 10-33 = 1037-33 = 104 ? = 4 Directions (Q. 21-30): what approximate value should come in place of question mark (?) in the following questions? 21). 5626 + 6085 29 = ? a) 127 b) 124 c) 125 d) 130 e) None of these 22). 33.33 + 63.73 + 55.98 76.01 = ? a) 67

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    b) 75 c) 73 d) 77 e) None of these 23). 63.987 9449.97 243.01 = ? a) 2520 b) 2468 c) 2430 d) 2444 e) 2450 24). 7153.99 + 5237.89 2205.10 666.013 = ? a) 9270 b) 9530 c) 9520 d) 9259 e) 9525 25). 149.96% of 184.93 + 275.13% of 6279.9 183 = ? a) 17480 b) 18460 c) 17340 d) 17370 e) 18037 26). (10/12) [(4/18) (8/18)] (12/14) = ? a) 1.25 b) 0.25 c) 0.5 d) 1.75 e) 2 27). 15% of 62.58 + 20% of 9.68 = ? a) 14 b) 18 c) 16

    d) 11 e) 9 28). 543.28 55 = ? a) 4 b) 8 c) 10 d) 12 e) 9 29). [(6/1.6) (22/0.4)] [(56/6) (42/10)] = ? a) 5 b) 8.2 c) 5.8 d) 4.2 e) 6 30). (2.2)2 + (6.4)2 + (6)2 = ? a) 90 b) 72 c) 82 d) 97 e) 87 Explanation With Answer Key: 21). B) 5626 = 5625 = 75 6085 = 6084 = 78 Now, ? = 5626 + 6085 29 = 75 + 78 29 = 153 29 = 124 22). D) ? = 33.33 + 63.73 + 55.98 - 76.01 = 33 + 64 + 56 - 76 = 153 - 76 = 77 23). A) ? = 63.987 x 9449.97 243.01

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    = 64 x 9450 240 = 2520 24). C) ? = 7153.99 + 5237.89 - 2205.10 - 666.013 = 7154 + 5238 - 2205 - 666 = 12392 - 2871 = 9521 = 9520 25). D) ? = 149.96% of 184.93 + 275.13% of 6279.9 - 183 = (150/100) x 185 + (275/100) -183 = 277.5 + 17270 - 180 = 17547 - 180 = 17367 = 17370 26). C) ? = (10/12) [(4/18) (8/18)] (12/14) = (10/12) [(4/18) (18/8)] (12/14) = (10/12) (1/2) (14/12) = 140/288 = 0.5 27). D) ? = (15 / 100) 62.58 + (20/100) x 9.68 = (15x60) / 100 + (20x10) / 100 = 9+2 = 11 28). C) ? = 543.28 55 = 540 55 = 10 29). A) ? = ? = [(6/1.6) (22/0.4)] [(56/6) (42/10)] = (3.7555) 39.2 5.2 Answer: a) 30). C) ? = (2.2)2 + (6.4)2 + (6)2 = (2)2 + (6.5)2 + (6)2 = 4 + 42.25 + 36 = 82.25 = 82

    Directions (Q. 31-35): what should come in place of questions mark (?) in the following questions? 31). [ 6/4 32/8 6/16] + [6/16 24/8 36/4] = ? a) 93/67 b) 99/8 c) 94/8 d) 99/13 e) None of these 32). (6160 + 12320) ? = 660 a) 35 b) 22 c) 25.5 d) 32.4 e) 28 33). ? (1047 + 137.5) = 46195.5 a) 27.4 b) 26 c) 28.4 d) 39 e) 28 34). (10 10 10) / (4 + 4 + 4 + 4) = ? a) 59.5 b) 50.5 c) 62.5 d) 67.5 e) 72.5 35). (6/8) + (10/16) + (26/32) + (6/10) = ? a) 51/16 b) 26/9 c) 29/12 d) 53/16 e) None of these

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    Directions (Q. 36-40): what approximate value should come in place of question mark (?) in the following questions? [you are not expected to calculate exact value] 36). (2914.01 31.1) (1.99 3.01) 510.01 169.99 = ? a) 405 b) 423 c) 340 d) 452 e) 567 37). (4810 / 2310) 22.678 + 130.13 = ? a) 2300 b) 2500 c) 2700 d) 2400 e) 2250 38). 11.25% of 175 + 8.72% of 763 + 38% of 380 = ? a) 230 b) 295 c) 267 d) 195 e) 182 39). (26.89 168.98 + 4317 6336.98) / 230 = ? a) 105 b) 195 c) 167 d) 325 e) 266 40). (1087.9996) + (5.1961)2 = ? (2 / 10.7960) a) 44 b) 48 c) 30 d) 68

    e) 11 Explanation With Answers Key: 31). B) ? = [ 6/4 32/8 6/16] + [6/16 24/8 36/4] = (9/4) + (81/8) = 99/8 32). E) (6160 + 12320) ? = 660 (6160 + 12320) / 660 = 18480/660 = 28 33). D) ? (1047 + 137.5) = 46195.5 ? = 46195.5 / (1047 + 137.5) ? = 46195.5 / 1184.5 = 39 34). C) ? = (10 10 10) / (4 + 4 + 4 + 4) = 1000 / 16 = 62.5 35). E) ? = (6/8) + (10/16) + (26/32) + (6/10) ? = (3/4) + (5/8) + (13/16) + (3/5) ? = 223/80 36). B) ? = (2914.01 -:-- 31.1) (1.99 3.01) x 510.01 169.99 ? = (2914 31) (2/3) (510/170) = (2914/31) (3/2) (510/170) = (2914x3x3) / (31 2) = 47 x 9 = 423 37). D) ? = (4810 / 2310) 22.678 + 130.13 = (4810/48) 22.7 + 130 = 100 22.7 + 130 = 2270 + 130 = 2400

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