241 . If A and B are in the ratio 3 : 4 and B and C in the ratio 12 :13 then A and C will be in the dratio-
  • A. 3 :13
  • B. 36 : 13
  • C. 13 : 9
  • D. 9 : 13
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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯
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প্রিমিয়াম প্ল্যান: ১ মাস
99 ৳
৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।
সাবস্ক্রিপশন লিংক

242 . If A and B together can complete a work in 18 days, A and C together in 12 day and B and C together in 9 days, then B alone can do the work in -
  • A. 24 days
  • B. 18 days
  • C. 30days
  • D. 40 days
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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯
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243 . If a books bought at prices ranging from Tk.200 to Tk.350 are sold at prices ranging from Tk.300 to Tk.425. What is the greatest possible profit that might be made in selling books?
  • A. 600
  • B. 400
  • C. 450
  • D. 500
  • E. 1800
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244 . If A can do 1 /4 of a work in 3 days and B can do 1 /6 of the same work in 4 days , how much will A get if both work together and are paid Tk. 180 in all ?
  • A. Tk. 60
  • B. Tk. 120
  • C. Tk. 90
  • D. Tk. 180
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245 . If a cube has a length of 8 cm , what is its total surface area?
  • A. 64
  • B. 96
  • C. 384
  • D. 256
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Senior Officer (IT) - Sonali-Janata-BD Krishi-BD Development Bank Ltd - 30.11.2018
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246 . If a:b=1:3, b:c=5:7 then what is the value of a:b:c?
  • A. 3:5:7
  • B. 5:9:15
  • C. 5:15:21
  • D. 4:13:24
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247 . If a:b=4 and b:c=5 than a:b:c=?
  • A. 8: 15: 12
  • B. 20: 35: 42
  • C. 20: 35: 24
  • D. None
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248 . If an investor gets Tk. 19500 as interest after 5 years on his savings of Tk. 13,000. what is the rate of interest ?
  • A. 8%
  • B. 5%
  • C. 10%
  • D. 30%
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Senior Officer (IT) - Sonali-Janata-BD Krishi-BD Development Bank Ltd - 30.11.2018
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249 . If b + a = x and a - b = y, then a2 - b2 =
  • A. (x2 - y2)/2
  • B. (x2 - y)/2
  • C. 2xy
  • D. xy/2
  • E. xy
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250 . If both length and width of a rectangular plot for a garden are increased by 20%, how many percent of the plot would be increased?
  • A. 20
  • B. 24
  • C. 36
  • D. 40
  • E. None of these
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251 . If both x and y are integers and x = 24y + 12, then which of the following must be true?
  • A. x/12 is even
  • B. x/6 is even
  • C. (x + 4)/8 is odd
  • D. (x + 4)/8 is even
  • E. None of these
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252 . If determinant of a matrix A is Zero than :
  • A. A is a Singular matrix
  • B. A is a non - Singular Matrix
  • C. First and last rows of the matrix must be same
  • D. First and last columns of the matrix must be same
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Senior Officer (IT) - Sonali-Janata-BD Krishi-BD Development Bank Ltd - 30.11.2018
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253 . If each angle of a regular polygon is 162°, how many sides does it have?
  • A. 12
  • B. 10
  • C. 8
  • D. 16
  • E. 20
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254 . If each side of a rectangle is increased by 20% , the increase in the area of a rectangle will be______
  • A. 50%
  • B. 35%
  • C. 40%
  • D. 44%
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255 . If for a square matrix A , A2=A then such a matrix is known as :
  • A. Idempotent matrix
  • B. Orthagonal matrix
  • C. Null matrix
  • D. Identity matrix
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