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For a parallelogram, we need 2 pairs of parallel lines. So, we can "choose" any two lines from the first set of 4 parallel lines 'and' choose any two lines from the second set of 5 parallel lines. Hence the value we need is 4C2 × 5C2 = 6 × 10 = 60 Thus 60 parallelograms are formed.
Small reddish brown spot surrounded by water soaked margin with yellow holes appear on soybean pods are the symptoms of:
Acidic soils are found in
Application of super digested compost to acidic calcareous and heavy soils increases the availability of
Match List I with List II IMD uses the aridity index on the basis of (PE-AE)/PE to assess fortnight drought situation over India