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Integers a, b, c, d are such that −5≤a≤4, −2≤b≤6, −3≤c≤8 and −4≤d≤6. If X = ab + bc + cd + da, then find the least value of X? |
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Answer» Integers a, b, c, d are such that −5≤a≤4, −2≤b≤6, −3≤c≤8 and −4≤d≤6. If X = ab + bc + cd + da, then find the least value of X? |
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