Karan bought a little box of midget matches, each one inch
in length. He found that he could arrange them all in the
form of a triangle whose area was just as many square inches
as there were matches.
He then used up six of the matches, and found that with the
remainder he could again construct another triangle whose
area was just as many square inches as there were matches.
And using another six matches he could again do precisely
the same.
How many matches were there in the box originally?
Note that the match-box can hold maximum of 50 matches.
Answer / guest
Initially, there were 42 or 36 matches in the match-box.
There are 42 matches in the box with which he could form a
triangle 20, 15, 7, with an area of 42 square inches. After
6 matches had been used, the remaining 36 matches would form
a triangle 17, 10, 9, with an area of 36 square inches.
After using another 6 matches, the remaining 30 matches
would form a triangle 13, 12, 5, with an area of 30 square
inches. After using another 6, the 24 remaining would form a
triangle 10, 8, 6, with an area of 24 square inches.
Thus, there are two possible answers. There were either 42
or 36 matches in the match-box.
| Is This Answer Correct ? | 2 Yes | 0 No |
13.333*19.111=?
A woman took a certain number of eggs to the market and sold some of them. The next day, through the industry of her hens, the number left over had been doubled, and she sold the same number as the previous day. On the third day the new remainder was tripled, and she sold the same number as before. On the fourth day the remainder was quadrupled, and her sales the same as before. On the fifth day what had been left over were quintupled, yet she sold exactly the same as on all the previous occasions and so disposed of her entire stock. What is the smallest number of eggs she could have taken to market the first day, and how many did she sell daily? Note that the answer is not zero.
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