MBA Exam

52.11- For how many natural numbers n, n^2 + n + 1 is divisible by 15?

1) 0
2) 1
3) 2
4) Infinite

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MBA Other Question

If sin x + sin2 x = 1, then find the value of (cos12x + 3 cos10 x + 3 cos8 x + cos6 x â€“ 1)?

1) -1
2) 2
3) 0
4) 1
If y is the mean of some 10 prime numbers y1, y2, y3,...,y10 then (y1-y) + (y2-y) + .... + (y10-y)=____

1) y
2) 10
3) 0
4) Can't be determined