Solve. How you can arrange four 5’s so that they equal six? Describe the strategy you used to find your solution(s).
Note. You can use any mathematical operations.
See here. A few solutions are given below.
How to Solve It?
Solve. How you can arrange four 5’s so that they equal six? Describe the strategy you used to find your solution(s).
Note. You can use any mathematical operations.
See here. A few solutions are given below.
1 3 5 horizontal
2 3 4 vertically. And vice versa
3 is common and sum is rest two is same both ways.
Thank you so much for your solution. However, a complete solution is already provided, which includes your one.
2+3+4=9. Therefore, wrong answer. The total should be 8.
If x1,x2,x3,x4 &x5 are 5 numbers ;
If Any xi comes in center i=1,2,3,4,5;
Then sum of two is sum of remaining two excluding xi;
If xi=1 remainings are 2,3,4 &5 :- 2+1+5( let it be Horizontal)=3+1+4(let it be vertical);
3+1+4 ( let it be Horizontal)=2+1+5(let it be vertical);
If xi=2 remainings are 1,3,4 & 5:- Solution not possible;
If xi=3 remainings are 1,2,4 &5 :- 1+3+5(H)=2+3+4(V);
2+3+4(H)=1+3+5(V);
If xi=4 remainings are 1,2,3 & 5:- Solution not possible;
If xi=5 remainings are 1,2,3,4 – (1+5+4)(H)=(2+5+3)(V);
(2+5+3)(H)=(1+5+4)
There are two possibilities in adding the five numbers to equal eight: 1,2,5 and 1,3,4. The number common to both permutations is 1. Therefore, the number in middle can only be 1.
Thank you
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