Question
Two students appeared in an exam and one secured 10
marks more than the other. If marks of student who got more marks is 52% of the sum of the marks of both of them, then find the marks obtained by them.Solution
Let total marks obtained by both of them is x and y respectively. x – y = 10 And, x = 0.52 × (x + y) x = 0.52 × (10 + y + y) x = 0.52 × (10 + 2y) x = 5.2 + 1.04y 10 + y = 5.2 + 1.04y 0.04y = 4.8 y = 120 x = 120 + 10 = 130
112 ? 336 840 2520 8820
...8         43            209               82 9                              2479�...
If 4 2 x 1.5 0.5
Then, 1/3 x + 2.5 = ?
If  204    196       223   x  284
Then, what is the average of the numbers of the above series?
...12, 24, 72, 288, 1440, ?
2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 10Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
13Â Â Â Â Â Â Â Â Â Â 182Â Â Â Â Â Â Â Â 303Â Â Â Â Â Â Â Â 384Â Â Â Â Â Â Â Â 433Â Â Â Â Â Â Â Â ?
...6 10 ? 210 1672 16710
...40    42    87    266    ?     5366
Select the number from among the given options that can replace the question mark (?) in the following series.
8, 27, 64, 125, 216, ?
Relevant for Exams:
