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प्रश्न
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
x + y = .......
रिकाम्या जागा भरा
उत्तर
x + y = 3 + 6 = 9
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Concept of Substitution
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