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Let the number of Rs. 2 coins, Rs. 5 coins and Rs. 10 coins be '4a', '5a' and '3a', respectively. ATQ, 2 X 4a + 5 X 5a + 10 X 3a = 252 Or, 8a + 25a + 30a = 252 Or, 63a = 252 So, 'a' = 4 Therefore, total number of coins in the bag = '12a' = 12 x 4 = 48
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