Question
Which of the following organisations publishes the
‘Red List’ of threatened species?Solution
The 'Red Data Books' published by the International Union for Conservation of Nature and Natural Resources (IUCN).
4, 7, 12, 21, 36, ?
3, 8, 27, 124, ?
150, 158, 131, 195, 70, ?Â
 5, 6, 14, 45, 184, ? Â
What will come in place of the question mark (?) in the following series?
4, 8, 2, 12, 1.5, ?
12    48      192      ?      3072       12288
...84, 63, ?, 283.5, 1701
- What will come in place of the question mark (?) in the following series?
24, 35, 57, 90, 134, ? 3, 8, 18, 33, 53, ?
562, 628, 698, ?, 850