MBA Exam

If one root of the equation (I-m)x^2 +I x + 1 = 0 is double of the other & is real, find the greatest value of m.

1) 9/8
2) 8/7
3) 8/6
4) 7/5
5) 5/7

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MBA Other Question

if n is a prime no.greater than 5 then n^4-1 is divisible by which of the following digits?

1) 240
2) 280
3) 297
4) 135
Find the last two digits of 891^297

1) 41
2) 34
3) 31
4) N.O.T