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The recommended fluoride concentration in drinking water to protect teeth against decay is approximately 1 ppm, as it falls within agreed safety limits.
556, 547, 483, 458, 242, 196
Find the Wrong number in the given number series.
29, 76, 123, 166, 209, 256
Direction: Find the wrong number in given number series.
214, 230, 294, 550, 1574 , 5470.
48, 112, 144, 192, 310, 732
4, 8, 24, 96, 485, 2880, 20160
Find the wrong number in given number series.
1687, 1666, 1618, 1549, 1457, 1342.
630, 180, 60, 24, 12, 8, 5
24, 72, 36, 112, 54, 162
174 180 198 252 414 910
