Question
A man lost one-fourth of his initial amount in the
gambling after playing three rounds. The rule of Gambling is that if he wins he will receive Rs. 1000, but he has to give 50% of his total amount after each round. Luckily he won all the three round. Find the initial amount that he had.Solution
Let the Initial amount be Rs x According to the question, [(((x+1000)× 1/2+1000)× 1/2+1000) × 1/2] = x/4 [(x/2+ 1500) × 1/2+ 1000 ) × 1/2] = x/4 [x/4+ 1750] × 1/2 = x/4 x/8=875 x= 7000
Direction: Which of the following will replace ‘?’ in the given question?
5, 18, ‘?’, 126, 296, 586, 1044
12 3 15 ? 153 756
...7   24    43    66   ?      126
92,  51,  21,  13.5,  x,  4.25
find the value of (10x + x -5)?
97 106 121 138 157 180
...217Â Â Â Â Â 267Â Â Â Â Â 304Â Â Â Â Â 330Â Â Â Â Â Â 348Â Â Â Â Â 357
...25 13.5 12.5 20.75 39.5 ? 302.25
...9 134 170 ? 577 1306
...43 36 50 29 ? 22
...51     53     109     332     ?     6686
...