Question
A number is first increased by 100%, then increased by 30%
and then decreased by 75%. If the resultant number is 195, then find the original number.Solution
ATQ,
Let the original number be '100x'.
ATQ;
100x × 2 × 1.3 × 0.25 = 195
Or, 65x = 195
So, x = 3
So, original number = 3 × 100 = 300
18, 32, 50, 82, 132, ?
5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6.5 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 20 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 113.5 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 799 Â ...
3, 49, 191, 477, ?, 1673
9 15 90 95 475 479
6 a b c d e
Find the value of c.
...1331      1000            729       512       ?             216
...Find the wrong number in the given series.
12, 18, 27, 42, 62, 87
18 113 559 2247 6721 13451
...6   16  ?     244  1,245  7,506  52,591
104Â Â Â Â Â Â 156Â Â Â Â Â Â Â 234Â Â Â Â Â Â Â ? Â Â Â Â Â Â Â 526.5Â Â Â Â Â Â Â 789.75
...3 2 2 3 8 ?
...
Relevant for Exams:
