MBA Exam

The sum of the first and the third digits in a four-digit number equals the sum of the other two digits. The sum of its first two digits equals its last digit. Five times the last digit is equal to the sum of four times the third digit, twice the first digit and six times the second digit. How many four-digit numbers satisfy the given conditions?

1) 1
2) 2
3) 3
4) None of these

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MBA Other Question

From a solution that has milk and water in the ratio 5 : 3, ‘x’ percent is removed and replaced with water. The concentration of milk in the resulting soution lies between 30% and 50%. Which of the following best describes the value of ‘x’?

1) 25<x<50
2) 20<x<52
3) 20<x<48
4) 25<x<60
A total of 810 balls are arranged in N layers. The ith layer from the top where 2<=i<=N has 4 more balls than the layer immediately above it. Which of the following is not a possible value of N?Explain.

1) 27
2) 18
3) 15
4) 10
5) 20