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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
If T is related to Ahmedabad and X is related to Delhi in a certain way. Then, J is related to which of the following?
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If we increase all the even digits by 2 and decrease all the odd digits by 1 in the number '67451527637', then how many digits will appear more than twi...
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Five words are given in the options and taking four letters of each of the words as specified, different words can be obtained and one of them is not an...
The position of how many letters remain unchanged of the word ‘APPRECIATION’ when all the letters of the word are rearranged in English alphabetical...
How many pairs of letters are there in the word ‘HIMALAYA’, which has as many letters between them in the words as in English alphabetical series (b...