Wednesday, February 29, 2012

Math Set - 21

  1. (0.9 x 0.9 x 0.9 + 0.1 x 0.1 x 0.1) is equal to
    2. a. 0.73  b. 0.82
c. 0.91  d. 1.00
  2. By what least number should 4320 be multiplied so as to obtain a number which is a perfect cube?
    3. a. 40  b. 50
c. 60  d. 80
  3. In an examination, a student had to obtain 33% of the maximum to pass. He got 125 marks and failed by 40 marks. The maximum marks were
    4. a. 500  b. 600
c. 800  d. 1000
  4. If A:B = 3:4 and B:C = 8:9 then A:B:C is
    5. a. 8:6:9  b. 9:8:6
c. 6:8:9  d. 3:32:9
  5. If 30% of (B-A) = 18% of (B+A), then the ratio A:B is equal to
    6. a. 4:1  b. 1:4
c. 5:4  d. 5:9
  6. Two numbers are in the ratio 3:5 and their LCM is 225. The smaller number is
    7. a. 45  b. 60
c. 75  d. 90
  7. The difference between the selling price and cost price of an article is Rs. 210. If the profit percent is 25, then the selling price of the article is
    8. a. Rs. 950   b. Rs. 1050
c. Rs. 1150  d. Rs. 1250
  8. If the ratio of the cost price and the sale price of an article be 5:6, the percentage of gain is
    9. a. 25  b. 20
c. 18  d. 15
  9. An article, which is marked Rs. 650, is sold for Rs. 572. The discount given is
    10. a. 12%  b. 13%
c. 21%  d. 26%
  10. Two successive discounts of 10% and 5% are equivalent to a single discount of
    11. a.14%    b. 14.25%
c.14.50% d. 15%
  11. 32 is what percent of 80?
    12. a. 24%  b. 25.6%
c. 36%  d. 40%
  12. The length of a rectangular plot of land is increased by 5% and the breathe is decreased by 10%, how much will its area increase or decrease?
    13. a. 6.5% increase b. 5.5% decrease
c. 5.5% increase d. 6.5% decrease
  13. A alone can complete a work in 18 days and B alone in 15 days. B alone worked at it for 10 days and then left the work. In how many more days, will A alone complete the remaining work?
    14. a. 5  b. 5.5
c. 6  d. 8
  14. Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in
    15. a. 15 days  b. 18 days
c. 20 days  d. 24 days
  15. The speeds of the two trains are in the ratio 6:7. If the second train runs 364 km in 4 hours, then the speed of first train is
    16. a. 60 km/hr  b. 72 km/hr
c. 78 km/hr  d. 84 km/hr
  16. Two trains, 80 meters and 120 meters long, are running at the speed of 25 km/hr and 35 km/hr respectively in the same direction on parallel tracks. How many seconds will they take to pass each other?
    17. a. 48  b. 64
c. 70  d. 72
  17. At some rate of simple interest, A lent Rs. 6000 to B for 2 years and Rs. 1500 to C for 4 years and received Rs. 900 as interest from both of them together. The rate of interest per annum was
    18. a. 5%  b. 6%
c. 8%  d. 10%
  18. A sum of money becomes double in 3 years at compound interest compounded annually. At the same rate, in how many years will it become four times of itself?
    19. a. 4    b. 6
c. 6.4  d. 7.5
  19. There are 50 students in a class. Their average weight is 45 kg. When one student leaves the class the average weight reduces by 100 gm. What is the weight of the student who left the class?
    20. a. 45 kg.    b. 47.9 kg.
c. 49.9 kg.  d. 50.1 kg.
  20. 30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen?
    21. a. Rs. 9   b. Rs. 10
c. Rs. 11  d. Rs. 12



Answers:-
1.(a) 2.(b) 3.(a) 4.(c) 5.(b) 6.(c) 7.(b) 8.(b)
9.(a) 10.(c) 11.(d) 12.(b) 13.(c) 14.(b) 15.(c) 16.(d)
17.(a) 18.(b) 19.(c) 20.(d)
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Math Set - 20


  1. If (17)2 is subtracted from the square of a number, the answer so obtained is 1232. What is the number?
    2. a. 36  b. 42  c. 37
d. 39  e. 32
  2. 22.5 x 32.4 ÷ 4.5 = ?
    3. a. 164  b. 152  c. 156
d. 166  e. None
  3. 3352 + 3331 + 3109 + 3456 = 28810 - ?
    4. a. 13748  b. 15602  c. 13478
d. 15562  e. None
  4. 324 x 149 = ?
    5. a. 47628 b. 48276 c. 47978
d. 48622 e. None
  5. 3055 ÷ 25 x 3.4 + 125 = ?
    6. a. 52.50 b. 418.28 c. 662.68
d. 540.48 e. None
  6. 75 x sqrt of (841) ÷ 15 = ?
    7. a. 135  b. 145  c. 125
d. 115  e. None
  7. (63)2 ÷ (?)2 + 32 = 58
    8. a. 81  b. 6  c. 9
d. 36  e. 7
  8. 8452 + 1208 = ? x 28
    9. a. 345  b. 365  c. 355
d. 325  e. None
  9. (5)2 x (25)3 x 125 = 5?
    10. a. 9  b. 7  c. 8
d. 11 e. None
  10. (3750 – 2580) ÷ 25 ÷ 6 = ?
    11. a. 7.80  b. 280.80 c. 15.80
d. 250.50 e. None
  11. 55% of 560 – 28% of ? = 229.6
    12. a. 250  b. 260  c. 300
d. 320  e. None
  12. (10248 ÷ 56) – (7568 ÷ ?) = 11
    13. a. 42  b. 54  c. 48
d. 52  e. None
  13. 97306 – 89306 = ?% of 32000
    14. a. 20  b. 40  c. 35
d. 25  e. None
  14. 12.5% of 350 x 8.4% of 250 = ?
    15. a. 831.25  b. 913.50  c. 918.75
d. 1050    e. None
  15. A number, when divided by 221, leaves a remainder 64. What is the remainder if the same number is divided by 13?
    16. a. 0 b. 1 c. 11
d. 12    e. None
  16. The LCM of two numbers is 44 times of their HCF. The sum of the LCM and HCF is 1125. If one number is 25, then the other number is
    17. a. 1100  b. 975  c. 900
d. 800   e. None
  17. 0.001 is equivalent to
    18. a. 10%  b. 1%  c. 0.01%
d. 0.1% e. None
  18. (6.5 x 6.5 – 45.5 + 3.5 x 3.5) is equal to
    19. a. 10  b. 9  c. 7
d. 6   e. None
  19. If the selling price of 4 articles is equal to the cost price of 5 articles, the profit is
    20. a. 20%  b. 22.5% c. 25%
d. 30%  e. None
  20. If selling price of an article is reduced by 60%, then there is a loss of 10% on cost price. The initial profit percent is 
    21. a. 70  b. 80  c. 100
d. 125   e. None



Answers;-
1(d) 2(e) 3(d) 4(b) 5(d) 6(b) 7(c) 8(a)
9(d) 10(b) 11(e) 12(e) 13(d) 14(c) 15(d) 16(a)
17(d) 18(b) 19(c) 20(d)
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Math Set - 19

  1. In an examination, Mandhar scored 80 marks in Mathematics, 95 marks in Science, 74 marks in Social Studies, 65 marks in English 72 marks in Hindi. If all the papers were out of 100, what is Mandhar’s overall percentage in the examination?
    2. (a)75 (b)77.2 (c)78.5 (d)80 (e)None
  2. The average of 5 positive numbers is 344. The average of the first two numbers is 650 and the average of last two numbers is 100. what is the third number?
    3. (a)200 (b)210 (c)180 (d)Can’t determined (e)None
  3. Shilpa can complete a piece of work in 15 days and Shamita can complete the same piece of work in 24 days. In approximately, how many days can Shilpa and Shamita together complete the same piece of work?
    4. (a)6 days (b)4 days (c)7 days (d)9 days (e)12 days
  4. Samir’s monthly income is twice Deepa’s monthly income. The ratio of the monthly income Deepa and Sandhya is 7:3 respectively and their average monthly income is Rs. 25000. What is Samir’s monthly income?
    5. (a)Rs. 35000 (b)Rs. 50000 
(c)Rs. 75000 (d)Can’t determined (e)None
  5. Find the average of the following set of scores- 450, 1050, 12, 390, 143, 286, 550, 999.
    6. (a)390 (b)485 (c)520 (d)500 (e)None
  6. There are 864 banana packed in dozens in 9 boxes. Each box has the same number of bananas. How many dozens of bananas are packed in each box?
    7. (a)12 (b)9 (c)8 (d)6 (e)None
  7. 450% of a number is 4725. What is 82% of that number?
    8. (a)861 (b)1050 (c)681 (d)900 (e)None
  8. A trader sells 40 meters of cloth for Rs. 8200 at a profit of Rs. 25 per meter of cloth. How much profit will the trader earn on 40 meters of cloth?
    9. (a)Rs. 950  (b)Rs. 1500 
(c)Rs. 1000 (d)Rs. 1200 (e)None
  9. What approximate value will come in place of the question mark (?) in the following question? (352 x 25) / 185 = ?
    10. (a)Rs. 12000 (b)72000 (c)24000 (d)32000 (e)None
  10. Mr. Pandit divided an amount of Rs. 108000 amongst his two daughters and three sons. Eachdaughter received thrice the amount as each of the sons. How much amount did each daughter receive?
    11. (a)Rs. 12000 (b)72000 (c)24000 (d)32000 (e)None
  11. In a sale, a discount of 15% was available on all the articles. If Vinit purchased an article for Rs. 4284 in the sale, what was the actual selling price of the article?
    12. (a)Rs. 5050 (b)Rs. 5000 
(c)Rs. 5140 (d)Rs. 4950 (e)None
  12. 32 teachers and 120 students were present at the beginning of the annual function and 16 teachers and 24 students came later for the function. What is the respective ratio of the number of teachers to the number of students who attended the function?
    13. (a)1:4 (b)1:3 (c)1:2 (d)2:3 (e)None
  13. A tourist bus covers a distance of 522 kms. At the speed of 58kms/hr. in 11 hours. If the bus halted at a tourist spot in the middle of the journey, for how much time did he halt?
    14. (a)30 minutes (b)1 hour 
(c)1 hour 30 minutes (d)2 hours (e)None
  14. The area of a circular plot is twice the area of a rectangular plot. If the area of the rectangular plot is 11088 sq. meters, what is the perimeter of the circular plot?
    15. (a)484 meters (b)572 meters 
(c)528 meters (d)440 meters (e)None
  15. The sum of the two digits of a two-digit number and the difference between the two digits of the two-digit number is 8. What is the two-digit number?
    16. (a)80 (b)88 (c)44 (d)Can’t determined (e)None
  16. The total number of students studying in a college is 4220. If the number of girls studying in the college is 2420, what is the respective ratio of the number of boys to the number of girls studying in the college?
    17. (a)90:131  (b) 90:121
(c) 121:70 (d) 121:80 (e) None
  17. The cost of 4 bags and 12 purse is Rs. 1520, what is the cost of 10 bags and 30 purses?
    18. (a)Rs. 3600 (b)Rs. 3500 (c)Rs. 4000
(d)Rs. 3900 (e) None
  18. The cost of 14 kgs. of rice is Rs. 672, the cost of 12 kgs. of wheat is Rs. 432 and the cost of 18 kgs. of sugar is Rs. 504. What is the total cost of 20 kgs. of rice, 15 kgs. of wheat and 16 kgs. of sugar?
    19. (a)Rs. 1898 (b)Rs. 1948 (c)Rs. 2020
(d)Rs. 1964 (e) None
  19. Vishvesh sets an alarm in two different clocks. The first alarm rings after every 30 minutes and the second alarm rings after every 90 minutes. If they rang together at 11 p.m., when is the earliest they will ring together again?
    20. (a) 12.30 a.m (b) 2.00 a.m (c) 1.30 a.m
(d) 1.00 a.m   (e) None
  20. The respective ratio between two numbers is 4:7. If 4 is added to each of the two numbers, their respective ratio is 3:5. What is the larger number?
    21. (a)42  (b)63  (c) 56
(d) Can’t determined  (e) None



Answers;-
1(b) 2(e) 3(d) 4(e) 5(b) 6(c) 7(a) 8(c) 
9(e) 10(e) 11(e) 12(b) 13(d) 14(c) 15(a) 16(b) 
17(e) 18(b) 19(a) 20(c)
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