Question
If Arun’s salary was decreased by 50% and subsequently
increased by 50%, then how much per cent did he lose?Solution
Let Arun’s original salary = ₹100 After 50% decrease: ₹100 - 50% of ₹100 = ₹100 - ₹50 = ₹50 After 50% increase on ₹50: ₹50 + 50% of ₹50 = ₹50 + ₹25 = ₹75 Loss = ₹100 - ₹75 = ₹25 Percentage loss = (25 / 100) × 100 = 25%
35 36 68 207 836 4205
...6 3.5 2.5 ? 8.5 23.75
...16, 54, 128, ‘?’, 432,686
7   24    43    66   ?      126
35    57    101    189    ?     717
130 114 106 102 100 ?
43Â 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 44Â 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 48Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
If  2  4  6  x  14  28  30
Then, x³+ 2 x+1 = ?
17 ? 33 44 57 72
...35Â Â Â Â Â Â Â Â Â Â 36Â Â Â Â Â Â Â Â Â Â 40Â Â Â Â Â Â Â Â Â Â 49Â Â Â Â Â Â Â Â Â Â 65Â Â Â Â Â Â Â Â Â Â ?
...
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