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Due to presence of high amount of exchangeable sodium and high pH, the soil colloids get dispersed and organic matter present in the soil are dispersed and dissolved. When these dispersed and dissolved organic matter is deposited on the surface, it gives alkali soil a dark brown-blackish appearance
17, 9, ?, 13.5, 25, 65
252, 128, 66, 35, 19.5, ?
30 162 344 ? 890 1270
...Which of the following number will replace the question mark (?) and complete the given number series?
4, 5, 12, 39, 160, ?
63 131 267 ? 1083 2171
7, 7, 14, 40, ?, 227
728, 737, ?, 778, 814, 863
120, 126, 138, 162, ?, 306
4, 6, 12, 30, ?, 315, 1260
32, 48, 72, 108, 162, ?
