If R is a relation from a finite set A having m elements to a finite set B having n elements, then the number of relations from A to B is
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If the relation R:A→B, where A={1,2,3} and B={1,3,5} is defined by R={(x,y):x<y,x∈A,y∈B}, then
The number of permutations of four letter words obtained from the letters of the word "ARTICLE"is
Replace the ? with appropriate alphabet group to complete the given series.
DFST, FSTD, STDF, ?
Student line up in a queue in which Ashish stands fifteenth from the left and Sachin is seventh from the right. If they interchange their places, Sachin would be fifteenth from the right. How many students are there in the queue?
Find two numbers such that twice of the first added to the second gives 21, and twice the second added to the first gives 27.
Let A={a,b,c} and B={4,5} Consider a relation R defined from set A to set B then R is subset of
If P+Q means P is husband of Q, P/Q means P is sister of Q, P∗ Q means P is the son of Q. How is D related to A in D∗B+C/A?
Find the ratio of the following :
Q. The speed of cycle is 15km per hour to the speed of scooter 30km per hour.
If in a certain language 'mu mit es' means 'who is she' and 'elb mu es' means 'where is she', then what is the code for 'where' in this language?
Neelam, who is Deepak's daughter, says to Deepika, "Your mother Rekha is the younger sister of my father who is the third child of Ramlal." How is Ramlal related to Deepika?
What is the first four terms of the A.P. whose first term is 3 and common difference is 5?
The sum of the present ages of father and his son is 60 years. 6 years ago, father age was five times the age of the son. After six years son's age will be
In how many ways can we select 5 people from a group of 9 people so that a particular person is never to be included
Statements:
1) All grasses are trees.
2) No tree is shrub.
Conclusions:
1) No grasses are shrubs.
2) Some shrubs are grasses.
How many words can be formed with the letters of the word ′OMEGA′ such that O and A occupy end places
Four numbers are given below out of which three are alike in some manner and fourth is different. Choose the different number :