Question
Statements:Â Some documents are files. All
books are folders. No file is a folder. Conclusions:      I. No folder is a file. II. All folders are documents. III. No book is a file.  In each question three statements followed by three conclusions numbered I, II and III have been given. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.ÂSolution
No file is a folder (E) ⇒ conversion⇒ No folder is a file (E). Hence conclusion I follows. Some documents are files (I) + No file is a folder (E) ⇒ Some documents are not folders(O). Hence conclusion II does not follow. All books are folders (A) + [No file is a folder (E)] ⇒ conversion⇒ No folder is a file (E) ⇒ No book is a file (E). Hence conclusion III follows.
The sum of three numbers is 226. If the ratio of the first to the second is 4:5 and that of second to the third is 7: 10 then the second number is?
A shopkeeper sells a product for ₹720 at a profit of 20%. What was the cost price of the product?
The number 8192 is which term in the following geometric sequence 2, 8, 32, 128, . . . . . . .
Mean of a grouped data calculated using direct method, assumed mean method or step deviation method:
In an AP, S₅ = 75 and S₇ = 119, where S_n is sum of first n terms. Find the 10th term.
what is the mean of given numbers 25, 15, 12, 23, 15,
The arithmetic mean and geometric mean of two numbers are 7 and 2√10 respectively, then find the numbers.
What will be the 11th term of the arithmetic progression 3, 8, 13, _____?
Find the mode of the following data:
6,15,18,6,18,11,23,22,6,18,15,22,12
If p:q = 5:7 and p + q = 408, then find the value of (q - p).