self Maths Puzzle

The supplementary of an angle is thrice its complimentary. Find the angle.

(a)60 (b)45 (c)90 (d)180

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self Other Question

ABC*DE=HGBC...find the value of each letter which is a digit.Each letter is represented by a unique digit.hence find the final value of this puzzle.
If log 0.317 = 0.3332 and log 0.318 = 0.3364, then find log 0.319