The first link in all the food chains is the primary producer i.e, the green plants. They are the first link because they use the sun's energy to produce their own food which is taken up by the organisms of the next level.
15     32      51      74     ?      134
...D irection: Which of the following will replace ‘?’ in the following series
10,14,’?’,199, 352, 530
...19Â Â Â 20Â Â Â Â 29Â Â Â Â 54Â Â Â 103Â Â Â ?
12Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â Â Â Â Â 12Â Â Â Â Â Â Â Â Â Â 4.5Â Â Â Â Â Â Â Â Â 15
18Â Â Â Â Â Â Â...
28    30    63    194    ?     3926
Select the number from among the given options that can replace the question mark (?) in the following series.
64, 60, 52, 40, ?, 4
16    9    11   26    ?    912
5, 11, 19, 29, 41, ?
If  3  12  108  x   43200
Then, 47% of (x + 72)= ?
9999 6666 ? 2962.66 1975.11 1316. 74
...