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27. यदि a तथा b दो वास्तविक संख्यायें ऐसी हों कि ab = 0, तो(a) a= 0 तथा b = 0(6) 4 = 0 अथवा b = 0 अथवा दोनों में से प्रत्येक 0(c) a= 0 तथा b* 0(d) b = 0 तथा 4# 0(रेलवे परीक्षा, 2006 |
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Answer» right answer is option b the correct answer is option (b) option (b) is the correct answer. a correct answer is (1) |
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