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Short trick – R= [(n-1)/t] ×100 8years = 3 times = 3-1=2 Then rate of interest = (2/8) ×100 =25%
Which of the following number will replace the question mark (?) and complete the given number series?
4, 5, 12, 39, 160, ?
9 19 39 ? 159 319
18, 22, 28, 38, 54, ?,
306, 272, 240, ?, 182, 156
81, 83, 87, 95, 111, ?
32 33 29 38 ? 47 11
...2, 13, 27, 44, ?, 87
140, 146, 158, 176, ?, 230
18 29 16 31 ? 33
10, 10, 15, 30, 75, ?
