MBA Exam

In an Arithmetic Progression of 19 integers, the product of the first and the eleventh term is equal to the product of the sixth and the thirteenth term. The product of the constant difference and the tenth term is 21. What is the value of the constant difference?(1) 7 (2) –60(3) –3 (4) Cannot be determined

1) 1
2) 2
3) 3
4) 4

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MBA Other Question
what is the minimum value of sqrt(x^2+y^2) such that 5x+12y=60?

1) 60/13
2) 13/5
3) 1
4) none of these
 A 4 - digit number X in base 4 when converted to base 3, gives a 4 - digit number. The number obtained by expressing X in base 12, has a zero in its units place. Find the total number of such numbers

1) 1
2) 2
3) 3
4) 4