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If x2n +1/x2n =k Let xn -1/xn =y (xn +1/xn)2 = x2n +1/x2n +2 (xn +1/xn)2 =k+2 Let xn +1/xn =z z2 = k+2 … (1) Using the identity for the square of a difference: y² = z2-4 Since z2 =k+2: y² = (k+2)-4 y² = k -2 Therefore- y = √ k-2 xn -1/xn =√ (k-2)
Statement :No cup is a medal.
All medals are trophies.
No trophy is a shield.
Some shield are prizes.
Conclusion:
I. ...
Some tyres may be flowers. Some jungles are not rains. Some flowers are petals.
Statement:
Only car are bus.
No bus is train.
Only bike are train.
Conclusion:
I. No train is car.
II. S...
Statements:
Some Sodas are Juice.
All Juices are Lime.
No Juice is Coke.
Some Cokes are Pepsi.
Conc...
Statements:
cups + sets.
sets + fours.
fours - claws.
claws + traps.
Conclusions:
I. claws + sets.
II. ...
Statements:
All Before are After
All After are Behind
Some Before are Opposite
Conclusions:
I. Some After are Oppo...
Statements:
All ribbons are mat.
Some mats are ropes.
No rope is a thread.
All thread is a needle.
<...Statements:
Few Blue are Purple.
No White is Purple.
Some White is Black
Conclusions:
I. All Blue can be W...
Statements: All bottle are cups.
No cup is a plate.
Conclusions: I. No bottl...
Statements:
No Summer is Winter.
Only a few Winter is Autumn
Some Summer are Spring.
Conclusions:
I. All W...
