Solving puzzles and riddles is an excellent way to exercise your brain.
Here is a good exercise which will really sharpen your brain.
So were you able to solve the riddle? Leave your answers in the comment section below.
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Answer:
There are Two ways in which you can solve this, answer will remain the same in both methods
Method 1 (Short approach):
i) 1 – 3 + 4 = 100,
If we solve it we get;
1 – 3 + 4 = -2+4 = 2
So 2 = 100.
ii) 4 – 6 + 9 = 999
Similarly;
we get 7 = 999
iii) 2 – 6 + 7 = 879
We get 3 = 879
Now we need to solve the last equation for which we need the answer;
So 3 -3 +6 = 6
we need to find the value of 6 which from above (i) + (ii) – (iii);
So 100 + 999 – 879 = 220
Method 2:
Let us name the equations as for better understanding
1-3+4=100 — (i)
4-6+9=999 — (ii)
2-6+7=879 — (iii)
3-3+6=? — (iv)
Now, subtracting each digit of eqn 3 from eqn 2..
2-0+2=120 — (v)
Similarly, subtracting L.h.s of eqn 1 from 4…
2 – 0 + 2 = r.h.s of eqn 5
Hence, 3 – 3 + 6 = 220
