GRE Questions

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'Hypothesis' is a word that gives a brief explanation of the concepts based on the limited evidence. The word 'theory' is closest in meaning to it.

Let 'n' number of days it take to complete.

we know that sum of n number= n/2[2a+(n-1)d]
where a=20,d=1;
n/2[2x20+(n-1)1]=275
n[n+39]=550
n2 + 39n - 550 = 0
 n2+ 50n - 11n - 550 = 0
(n-11) (n-50) = 0
n-11 = 0;
n = 11(Days).

Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year.
Thus, both A and R are true & R correctly explains A.

A Needle works when it has thread in its eye that is in its tiny hole.

Given BEAR, if you remove EAR only remains with 'B'.

Hence, we call it as 'B', a bear without an ear.

Here in the given options, The girl, whom you have met yesterday is my sister is the sentence which has relative pronoun.

The pronoun which is used to connect a clause or phrase to a noun or pronoun is called as relative pronoun.

The most common relative pronouns are who, whom, whose, which, and that. Sometimes when and where can also be used as relative pronouns.

A traffic light.

It has three 'eyes' (the red, orange and green lights) and the leg is the pole holding it up. Many people beg the light to stay green as they’re approaching.