engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Sequences and Series Harmonic Progressions
If the roots of the equation a (b - c) x2 + b (c - a) x + c (a - b) = 0 are equal, then which one of the following is correct?
1
a, b and c are in AP
2
a, b and c are in GP
3
a, b and c are in HP
4
a, b and c do not follow any regular pattern