Verify Whether $1 + 2 + 3 + \ldots + n = \frac { n } { 2 } ( n + 1 )$

question 136

Multiple Choice

Verify whether $1 + 2 + 3 + \ldots + n = \frac { n } { 2 } ( n + 1 )$ is true for $n = 7$

• A) yes
• B) no

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Definitions:

Phloem

The vascular tissue in plants responsible for the transport of sugars and other metabolic products downward from the leaves.

Vascular Tissue

Transport tissue in plants, consisting of xylem and phloem.

Evolution of Plants

The evolution of plants describes the processes by which plant species have developed and diversified from ancestral forms over geological time periods.

Embryo

Stage of a multicellular organism that develops from a zygote before it becomes free-living; in seed plants, the embryo is part of the seed.