Latest MBA Aptitude Question SOLUTION: If (1 + x + x^5)^15 = a0 + a1x + a2x^2 + a3x^3 +. . .+a74x^74 + a75x^75,then for how many values of i (0 <= i <= 75) is ai != 0? -approach also plz

1) 76
2) 6

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If (1 + x + x^5)^15 = a0 + a1x + a2x^2 + a3x^3 +. . .+a74x^74 + a75x^75,then for how many values of i (0 <= i <= 75) is ai != 0?
-approach also plz

1) 76
2) 69
3) 72
4) 70

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