Let x men doing a work and from second day onwards 1 worker left work, then wok will be completed in x days. x + x – 1 + x – 2 + ……….. x – n = x men Sum of n numbers(Sn) = n/2 [2a + (n -1)d] ⇒ x/2 [2 x + (x -1)(-1)] ⇒ x/2 [2 x – x + 1] ⇒ x/2 [x + 1] If no one would leave the work then, x/2 [x + 1] = x × x × 52/100 ⇒ x + 1 = 52x/50 ⇒ 50x + 50 = 52 x ∴x = 25
Statement:
Some dogs are cats.
No lion is a dog.
Conclusions:
I. Some cats are lions.
II. Some cats are not l...
Statements: Some giraffe are zebra.
All zebra are kangaroo.
Conclusions: I. Some gir...
Statements:
Some mats are bedsheets.
All bedsheets are chairs.
Some chairs are desks.
Conclusions:
I. Some desk...
Statements: No red is a pink.
...
Statements:
Only a few Gifts are Surprise
Only Surprise are Party
Some Gifts are Cake
Conclusion:
I. No Party are Cak...
Statements: No book is a pen.
All copies are books.
All books are telephones.
No radio is a telephone.
Conclusions: I. ...
Statements: Some girls are boy.
No boy is a men.
Conclusions: I. Some bo...
Statements:
99% nerves are veins.
34% veins are arteries.
None of the arteries are vessels.
Conclusions:
I. Some nerv...
Statement :
Some biscuits are cakes.
All cakes are flours.
All flours are muffins.
Conclusion :
I. All muffins ...
Statements: All milks are teas.
Some teas are coffees.
Conclusions I. Some teas are milks.
II. Some coffees are milks.
...
