Explanation

Degree of a term = sum of the powers of variables in that term.

Highest degree term is 8x²y³ with degree 2 + 3 = 5.

Explanation

Geometric Mean = ∛(2 × 4 × 8)

= ∛64

= 4

Explanation

World Brain Day is observed on 22 July annually.

Theme 2023: Brain Health and Disability- Leave No One Behind

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World Brain Tumor Day is observed on June 8

Explanation

A light microscope can magnify up to 1000x (typical maximum), resolving structures as small as 0.2 micrometers.

This is ~1000x sharper than the naked eye (which resolves ~0.2 mm).

Explanation

The area of a triangle inscribed in a circle is given by:

Area = abc/4R

Explanation

ln3 means the natural logarithm of 3 (log base e).

Its approximate value is 1.0986.

Explanation

Add and Added show a change from present to past tense.

Say and Said also represent present to past tense, matching the same pattern.

Explanation

Equisetum is commonly called horse-tail due to its brush-like appearance.

It belongs to Pteridophytes.

It is a living fossil.

It is found near wetlands.

Explanation

Hirudinaria is a genus of leeches, which are segmented worms.

Leeches belong to the phylum Annelida, known for segmented bodies.

Explanation

Combustible means آتش گیر

Flammable means آتش گیر