MBA Exam

A and B are single digit natural numbers. How many equations of the form A2x2 + Bx + 1 = 0 having real roots exist?

1) 20
2) 24
3) 16
4) 18

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MBA Other Question
Let M be a three digit number denoted by ‘ABC’ where A, B and C are numerals from 0 to 9. Let N be a number formed by reversing the digits of M. It is known that M – N + 396C is equal to 990. How many possible values of M are there which are greater than 300?

1) 10
2) 18
3) 24
4) 20
5) 30
 0

1) 0
2) 2
3) 45
4) 33