Number System
If A + B = 30 and AB = 94, What is the value of A² + B² ?

712
824
920
625

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Number System
What is a two-digit number if the ratio of the digit at ten's place to the digit at unit's place is 4 : 3 ? (I) The sum of the digits of a two-digit number is 14. (II) The digit at unit place is 75% o

If the data in statement (I) alone is sufficient to answer the question while that in statement (II) alone is not sufficient.
If the data even in both statements (I) and (II) together is not sufficient to answer the question.
If the data in statement (II) alone is sufficient to answer the question, while that in statement (I) alone is not sufficient.
If the data either in statement (I) alone or in statement (II) alone is sufficient to answer the question.

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