Question
`sqrt(7744)` Â Â -Â `sqrt(4761)` +Â `sqrt(8281)`
 + `sqrt(5625)` + ? = 1856 What value should come in place of the question-mark(?) in the following questions:Solution
`sqrt(7744)`   - `sqrt(4761)` + `sqrt(8281)`  + `sqrt(5625)` + ? = 1856 88 – 69 + 91 + 75 + ? = 1856 185 + ? = 1856 ? = 1856 – 185 ? = 1671Â
4, 6, 12, 30, ?, 315, 1260Â
Find the missing term in the series:
1, 4, 9, 16, 25, ?, 49
36, 48, 24, 60, ?, 72
?, 15, 45, 225, 1575, 14175
What should come in place of (?) question mark in the given number series.
2, 6, 15, 31, 56, ?
10,14,26,42,70,?
53 × 38 + 32 × âˆ›54872 = ?
168, 164, 155, 139, ?, 78
18, 30, 46, 66, 90, ?
152    142    122   ?     52    2