241 . 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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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: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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243 . 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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244 . 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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245 . 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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246 . 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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247 . 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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248 . 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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249 . 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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250 . 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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251 . If for integer x, 5 < x < 10 and y = x + 5. What is the greatest possible value of x + y ?
  • A. 32
  • B. 22
  • C. 23
  • D. 27
  • E. None of them
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252 . If in 2000 there were 61,000 people living per square mile in Mirpur, what is the approximate area of Mirpur ?
  • A. 15 sq miles
  • B. 18 sq miles
  • C. 21 sq miles
  • D. 30 sq miles
  • E. 36 sq miles
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253 . If it is 250 miles from Dhaka to Dinajpur and 120 miles from Dhaka to Pabna, what percentage of the distance from Dhaka to Dinajpur is the distance from Dhaka to Pabna?
  • A. 12
  • B. 24
  • C. 36
  • D. 48
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254 . If k is an integer and .0010101×10k is greater than 1000, what is the least possible value of k?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
  • E. 6
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255 . If Mario was 32 years old 8 years ago, how old was he x years ago?
  • A. x-40
  • B. x-24
  • C. 40-x
  • D. 24-x
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