Chlorosis refers to the yellowing of plant leaves, particularly between the veins, due to a reduced production of chlorophyll, which is essential for photosynthesis. Deficiency of magnesium and iron in the soil can lead to chlorosis because both nutrients are necessary for chlorophyll synthesis.
There are 3 series, you have to find value of a, b, c and then establish relation among a,b,c.
19, 25, 45, a, 553, 2767
1560 760 360 160 6...
35 36 40 49 65 ?
...22 15 10 20 33 93.5
...299, 302, 308, 317, ?, 344
7, 8, 12, 21, 37, ?
1335 737 355 141 47 ?
...? + (55)2= (140)2– (80)2– 6278
148, ‘?’ , 15 4 , 17 8 , 23 8 , 35 8 , 56 8
94 282 284 852 856 2562
...123 125 129 132 ? 145