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In a group of 50 students who either want to join defence forces or paramilitary forces, out of which 40 students want to join defence forces and 30 want to join paramilitary forces. Find the number of students who want to join only defence forces.
Consider the following two tables and four queries in SQL. Book (isbn, bname), Stock (isbn, copies) Query 1: SELECT B.isbn, S.copies FROM Book B INNER JOIN Stock S ON B.isbn = S.isbn;   Query 2: SELECT B.isbn, S.copies FROM Book B LEFT OUTER JOIN Stock S ON B.isbn = S.isbn; Query 3: SELECT B.isbn, S.copies FROM Book B RIGHT OUTER JOIN Stock S ON B.isbn = S.isbn;   Query 4: SELECT B.isbn, S.copies FROM Book B FULL OUTER JOIN Stock S ON B.isbn = S.isbn;   Which one of the queries above is certain to have an output that is a superset of the outputs of the other three queries?
In class, students want to join sports. 15 people will join football, 24 people will join basketball, and 7 people will join both. How many people are there in the class?
Which type of join returns all the rows of the table on the right side of the join and matching rows for the table on the left side of join?
Identify the correct sequence to join a Google Meet session A. Enter code and click continue B. Click ASK to join C. Click use a meeting code D. Go to meet.google.com E. When someone in the meeting gives you access you will join it. Choose the correct answer from the options given below:
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : The President of XYZ Party indicated that 25 independent Members of Legislative Assembly (MLA) are seriously considering various options of joining some political party. But in any case all of them collectively will join one party only.

Conclusions :
I. The 25 independent MLAs will join XYZ party in a short period of time.
II. The 25 independent MLAs will join some other political party in a short period of time.
An object is kept in one of the quadrants of principal planes of projection, for the front view the view is first and object is next and for top view the object came first and then the view on plane (the observer is at top right side of principal planes). The object is in which quadrant?
If a point P is placed in between the projection planes. The distance from side view to reference line towards front view and the distance between top view and reference line towards top view will be same.
If a point P is placed in between the projection planes in third quadrant. The distance from side view to reference line towards front view and the distance between top view and reference line towards top view will be same.
If a point P is placed in between the projection planes. The distance from side view to reference line towards the front view and the distance between the top view and reference line towards the top view will be different.