31 . (x+y)=5 এবং (x-y)=3 হলে x2+y2 এর মান কত?
- A. ৪৩
- B. ৯
- C. ৪৪
- D. ৩৪
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33 . x+y=6 এবং x-y=4 হলে x2+y2এর মান কত?
- A. ২৬
- B. ৩০
- C. ৭৪
- D. ২৪
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35 . যদি (x+y) + xy= ১ হয় , তাহলে y=?
- A. x/(x-১)
- B. x/(x+1)
- C. (x-১)/x
- D. (x+১)/x
- E. x
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36 . 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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37 . 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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38 . 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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39 . If x+2y=2x+y, then x-y equal to ---
- B. 2
- C. 4
- D. 5
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40 . 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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41 . 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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42 . If 850+x+y-640=342, and if x=2y then y=
- A. 44
- B. 48
- C. 132
- D. 184
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43 . 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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44 . x-y=1, xy=56 হলে x+y= কত?
- A. ১৬
- B. ১৫
- C. ২২৫
- D. ২২১
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45 . যদি x+5y=24 এবং x=3y হয়, তাহলে y = কত?
- A. 2
- B. 3
- C. 4
- D. 5
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