Instructions 4540

Calculate according to the instructions.

42,304,420,123

Step 1: Add all the pairs from the given numbers. There are 6 of them.
Step 2: Add all 4 numbers.
Step 3: Subtract the results of step 1 from the result in step 2. You will get 6 numbers. What are you observing?

Correct answer:

x =  0

Step-by-step explanation:

42; 304; 420; 123 x1=42+304=346 x2=42+420=462 x3=42+123=165 x4=304+420=724 x5=304+123=427 x6=420+123=543 y=42+304+420+123=889 a1=yx1=889346=543 a2=yx2=889462=427 a3=yx3=889165=724 a4=yx4=889724=165 a5=yx5=889427=462 a6=yx6=889543=346 a6 = x1, a5=x2, a4 = x3, a3=x4, a2=x5, a1=x6 x=0



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