MBA Exam

If then how many integral value of (x, y) exists?

1) 8
2) 16
3) 12
4) 4
5) 20

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MBA Other Question

The probability of getting at least one head when an unbiased coin is tossed thrice is

1) 7/8
2) 1/2
3) 1/8
4) 1/4
Pls give explanation from differentiation method -CAT 04 = 53. Let f(x) = ax 2 â€“ b| x|, where a and b are constants. Then at x = 0, f(x) is

1) 1. maximised whenever a > 0, b > 0
2) 2. maximised whenever a > 0, b < 0
3) 3. minimized whenever a > 0, b > 0
4) 4. minimized whenever a > 0, b < 0