Subject :IMO Class : Class 4
Subject :IMO Class : Class 5
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 6
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Subject :IMO Class : Class 3
Ans 1: (Master Answer)
Class : Class 1
(C): Number of stamps Dev has = 108
Number of stamps Dev’s brother has = 3 × 108 = 324
Total number of stamps they both have = 108 + 324 = 432
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Subject :IMO Class : Class 5
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Subject :IMO Class : Class 5
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Subject :IMO Class : Class 4
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Subject :IMO Class : Class 6