Asked in Premeth Test 19 — Solids

The following equation becomes mathematically correct when you interchange either the sign or the numbers as indicated in the question. Find the correct alternative. Given equation:(16 - 4) x 6 ÷ 2 + 8 = 30

Correct answer: B. ÷ and -

  • A. 4 and 2
  • B. ÷ and -
  • C. 16 and 6
  • D. - and +

Explanation

By interchanging the '÷' and '-' signs, the equation becomes (16 ÷ 4) × 6 - 2 + 8. This simplifies to 4 × 6 - 2 + 8 = 24 - 2 + 8 = 30, which is correct.

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About Solids

Solids are classified by particle arrangement and bonding into crystalline, ionic and molecular forms. Questions cover crystal lattices, the shapes and properties of ionic crystals, and lattice energy, including how ion charge and ionic size affect the strength of attractions within an ionic solid.

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