Given a, 1, and b are in AP and 1, a, and b are in GP: From AP= 1- a=b-1 b=2- a  … (1) From GP- b = a²    … (2) from Eq (1) and Eq (2) a² = 2-a a²+a-2=0 a2+2a- a -2 =0 a = 1 or - 2 Since a ≠1: a = -2 b = a² = 4 So, a = -2 and b = 4. Alternate method- According to the option- (a + b)/2 = 1 (a + b) = 2 Put the value of a and b in the option and satisfied. Taking option 2. (-2 + 4) = 2 2 = 2 (satisfied)
Statements:Â
All Pointers are Guns.
Only a few Guns are Cracker.
Some Cracker are not Bullets.
Conclusions:
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Atmost some cycle are scooter.
Only a few bike are cycle.
Some bike are scooter.
No bike are car.
Con...
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100% Fan are light
Only few Bulf are light
Only a few tube light are bulf
Conclusion
I. Some tube- li...
Statement:
Each tiger is a lion.
Only a few lion are dogs.
Some dogs are cats
Conclusion:
  1. All lions are tiger...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance...
In the question below some statements are given followed by two conclusions I and II. You have to take the given statements to be true even if they see...
Statements:All hotels are buses.
Some buses are cars.
All cars are trams.
Some trams are clouds.
Conclusions:I. Some trams a...
In the question below some statements are given followed by two conclusions I and II. You have to take the given statements to be true even if they see...
Statements: No magazine is a newspaper.
                            All newspaper are articles.
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In the following question, three statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if...
