A similar situation arises when we want to subtarct seven matches from 5 matches.
We have to borrow two matches in order to realize the operation and what we borrowed is our liability, i.e. something negative from our point.
Negative numbers should be added to the (set of) natural numbers.
Here we borrow from inside, from the number's self . Handling the numbers like digits, we are always to remember their place values.
Please look at ry1 and ry2.
They are 100000 and 9999 !
Depending on color being counted as an identfying property or not, both figures may or may not correspond to the abstraction.
In the abstract case evry and each "1" has the same properties and they are completely exchangeable.
Check first : Sign , even-odd , dismissing multiples of 3 in digit-sums.
please refer to ry1 .
60% of thrice of it = 150 .
60% is 150 means whole is 250 (250*60/100 = 25*6 = 150) .
Thrice of the number = 210 .
Division means finding how many times a number is to be found in another number, i.e, how many times it can be subtracted and what remains.
please refer to ry1 .
The ones should have a 4, i.e. two choices.
The question remaining is if tens has a 5 or 8.
Ones must be an 8 .
The easiest way is of course c, if the subject has a memory good enough.
Have to see that there exist 10 couples each giving a result of -1.
sum first from 1 to 30 via n(n+1)/2 and then subtract 10 times the sum of numbers from 1 to 6 .
remember that 99 999 999 + 1 = 100 000 000 .
99 999 999 + 1 = 100 000 000 olduğu gerçeğini kullanınız.
may seem complicated at first look, but similar to the previous question .
It must have taken an additional load of 25 300 tons .
Take care of units ton-kg.
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