MBA Exam

If a2 + b2 = c2 + d2 = 1, then find the value of (ac – bd)2 + (ad + bc)2.

1) –1
2) –2
3) 0
4) 1
5) 2

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MBA Other Question
Find the ratio of two numbers (smaller number to bigger number) if their HCF and LCM is 23 and 496 and also if one of the numbers is 16.

1) 16/713
2) 89/2
3) 713/6
4) 2/89
5) 500/11
 Each root of the equation ax3 – 7x2 + cx + 231 = 0 is an integer. One of the roots is times the
sum of the other two roots. What is the sum of all the possible values of a?

1) 17
2) -7
3) -17
4) not