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Solution
(A) : 143 = $$1+4+3=8$$ ; $$8^2=64$$
(B) : 232 = $$2+3+2=7$$ ; $$7^2=49$$
(C) : 719 = $$7+1+9=17$$ ; $$17^2=289$$
(D) : 462 = $$4+6+2=12$$ ; $$12^2=144\neq169$$
=> Ans - (D)
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