1636 . x2y2x,y,z>0 হলে .y-2z2.z-2x2 এর মান __

  • A. 2
  • B. 1
  • C. xyz
  • D. y
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1637 . 3x-7y+10=0 এবং y-2x-3=0 এর সমাধান ----
  • A. x=1, y= -1
  • B. x=1, y= 1
  • C. x=-1, y= -1
  • D. x=-1, y= 1
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1638 . দুই অঙ্কবিশিষ্ট একটি সংখ্যার এককের অঙ্ক দশকের অঙ্ক অপেক্ষা ৩ বেশি। সংখ্যাটি এর অঙ্কদ্বয়ের সমষ্টির তিনগুণ অপেক্ষা ৪ বেশি। সংখ্যাটি কত?
  • A. ৪৭
  • B. ৩৬
  • C. ২৫
  • D. ১৪
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1639 . 15-5x=24-8x কে সমাধান করলে x- এর মান হবে-
  • B. 2
  • C. 3
  • D. -3
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1640 . A father is 32 years older than the son. In 7 years the father's age will be 5 years more than twice that of the son. The age of the father, 3 years from now , will be
  • A. 45 years
  • B. 55 years
  • C. 65 years
  • D. 75 years
  • E. 85 years
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1641 . যদি x+5y=24 এবং x=3y হয়, তাহলে y = কত?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
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1642 . x-y=1, xy=56 হলে x+y= কত?
  • A. ১৬
  • B. ১৫
  • C. ২২৫
  • D. ২২১
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1643 . If x+y =9 and x-y =5, the value of 4xy is :
  • A. 24
  • B. 56
  • C. 28
  • D. 32
  • E. 18
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1644 . If 850+x+y-640=342, and if x=2y then y=
  • A. 44
  • B. 48
  • C. 132
  • D. 184
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1645 . If x+y=8p and x-y=6q, then x is
  • A. 2pq
  • B. 4p+3q
  • C. 3q+4p
  • D. 3q-4p
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1646 . If 50% of x is 75% of y, which of the following is equal to x+y?
  • A. 2.5y
  • B. 1.25y
  • C. 3y
  • D. 3.5y
  • E. None of these
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1647 . If x+2y=2x+y, then x-y equal to ---
  • B. 2
  • C. 4
  • D. 5
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1648 . If x/y = 3/4, then what is the value of x+y/y?
  • A. 3/7
  • B. 4/7
  • C. 1
  • D. 7/4
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1649 . If x+y=6, y+z=4 and z+x=2, then 2y-z-x?
  • B. 2
  • C. 8
  • D. 6
  • E. None of them
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1650 . If (X+Y)=9 and X/Y = 2, then X is equal to :
  • A. 3
  • B. 4
  • C. 5
  • D. 6
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