If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x3 + y3).
Since, (1/x) + (1/y) = 24/7 So, (x + y)/xy = 24/7 Or, xy = (4 × 7)/24 = 7/6 (x + y)3 = x3 + 3xy(x + y) + y3 So, x3 + y3 = 43 – 3 × 4 × (7/6) = 64 – 14 = 50
Each question contains a statement followed by Quantity I and II. Read the information clearly and answer your questions accordingly.
Quant...
The average of five even numbers is 38. If we replace two of these even numbers, 88 and 92, with a single even number X, the new average decreases by 4....
In nine innings of cricket, the average of a batsman is 59 runs. How many runs does he need to make it in the tenth inning to get the average score of 62?
A family spends ₹4,600, ₹5,600, ₹4,800, ₹3,800, and ₹6,000 on groceries in the first 5 months of a year. How much should the family spend in t...
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In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced ...
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The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)...
The average of 10 observations is 60. It was realized later that an observation was misread as 39 in place of 93. The correct average is:
