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Average of 12 numbers = 45.5 Sum of 12 numbers = 45.5 × 12 = 546 Average of first 4 numbers = 41.5 Sum of first 4 numbers = 41.5 × 4 = 166 Average of next 5 numbers = 48 Sum of next 5 numbers = 48 × 5 = 240 Sum of 10th, 11th and 12th number = 546 – 166 – 240 = 140 Let the 10th number be x. 11th number = x – 4 12th number = x – 9 According to the question, => x + x – 4 + x – 9 = 140 ⇒ 3x – 13 = 140 ⇒ 3x = 140 + 13 ⇒ 3x = 153 ∴ x = 153/3 = 51 Average of 10th and 12th number = (51 + 51 – 9)/2 = 93/2 = 46.5
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...