The average number of books on history, polity and geography in a library is 144, and the average number of books on history and geography is 140. If the number books on geography is 25% less than the number of books on polity, then what is the number of books on history in the library?
Let the number of books on History, Polity and Geography be x, y and z respectively. Given, (x + y + z)/3 = 144 Or, x + y + z = 432 ….. (1) And, (x + z)/2 = 140 Or, x + z = 280 ….. (2) From equation 1 and 2 Number of books on polity = y = 152 Number of books on geography = 0.75 × 152 = 114 Therefore, number of books on history = 432 – (152 + 114) = 166
Sunita is ranked 10th from the top and 18th from the bottom in her class. How many students are there in the class?
Select the option that represents the correct order of the given words as they would appear in an English dictionary. (Note: the
given words ...
Select the combination of mathematical symbols from among the given options that when sequentially placed in the blank boxes will result in a balanced e...
In a certain code language, ALBINISM is written as 79. How will NEURON be written in that code?
Pointing out to a person in a photograph, Sonal said, "She is the daughter of the daughter of the woman who is the mother of the husband of my mother." ...
Find the missing term in the following series.
AD25, CE64, EF121, GG196, ______
Five colleagues, Chand, Chandini, Nidhi, Vikram and Ajay, are sitting in a row facing north. Nidhi and Chandini occupy the extreme ends of the row. Vikr...
Ram and Shyam started together from same point. Ram walked 5 metres towards the East direction and Shyam walked 12 metres towards the North Direction ....
Select the term that will come next in the following series.
P6Q, Q18T, R42W, S78Z,?
Select the word-pair that best represents a similar relationship to the one expressed in the pairs of words given below.
(The words must be consi...
