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If plane `x + 4y - 2z = 1, x + 7y – 5z = beta, x + 5y + alphaz = 5` intersects in a line `(R xx R xx R)` then `alpha + beta` is equal to

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If plane `x + 4y - 2z = 1, x + 7y – 5z = beta, x + 5y + alphaz = 5` intersects in a line `(R xx R xx R)` then `alpha + beta` is equal to
A. `2`
B. `10`
C. `0`
D. `10`
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Correct Answer - B
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