First figure = (23 + 15) – 32 = 38 – 32 = 6 Second figure = (19 + 26) – 29 = 45 – 29 = 16 Third figure = (27 + 9) – 18 = 36 – 18 = 18
3 2 10 ? 17 16
The number of terms in the sequence 20, 25, 30, ….., 160 is:
2556 636 156 ? 6
16 9 11 26 ? 912
14 8 6 4 7 8.5
6 16 ? 244 1,245 7,506 52,591
12 23 65 ? 1239 7409
4, 8, 24, ?, 840, 9240
66 187 43 212 ? 241
6 6 13 39 ? 226
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