Suggested Answer:E🗳️
Plug in some numbers. Try a = 1, b = 2, c = 3 and d = 4. (d + c) גˆ’ (b + a) = 7 גˆ’ 3 = 4. It will work with any number since the difference between any two consecutive integers is always 1.
let a =n, b = n+1, c= n+2 , d=n+3.
(d+c)-(b+a) = (n+3+n+2) - (n+1+n) = (2n+5) - (2n+1) = 2n +5 - 2n -1 = 4
Correct answer is D (4)
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Mukite
2 months ago