Exams

A tetrahedron has 4 vertices. How many edges does it have?

If a2+1a2 = 38, then find the value of a-1a?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

curiosity killed the cat

Expand and simplify (x + 4)2 + (x -­ 2)2

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The first demonstration of the live (1)/ transmission of images were given by Georges Rignoux (2)/ and A. Fournier in Paris in 1909. (3)/ No error (4)

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option.

If a sentence is free from error, select 'No Error'.Although he (1)/ studied regularly, (2)/ his marks didn't improving. (3)/ No error (4)

A and B together can do a piece of work in 12 days while A alone can do the same work in 30 days. B alone can do it in

A statement is given followed by three inferences numbered I, II, and III. Consider the statement to be true even if it is at variance with commonly known facts. You have to decide which of the inferences, if any, follow from the given statement.

Statement: 

Donald Trump began the week facing accusations of treason over his embrace of Vladimir Putin and ended it with a middle finger to his many critics by inviting the Russian autocrat to the White House.

Inferences:

I. America and Russia are not allies.
II. No prior American President has ever
embraced a Russian counterpart.
III. Russian President, Vladimir Putin,
has been a long-time US enemy.