Chapter 1 to 7 Quiz

The area of a rectangular paper is 7⅓ cm². If its length is 4⅖ cm, its breadth is:

• 1⅗ cm

• 1⅔ cm

• ⅗ cm

• ²⁵⁄₆₀ cm

Two rational numbers between ⅓ and ½ are:

• ³⁄₇ and ³⁄₈

• ²⁄₅ and 0

• ¹⁄₆ and ⅔

• ⅔ and ³⁄₂

The sum of two rational numbers is −6. If one of them is 4½, the other number is:

• 2½

• 1½

• −1½

• −10½

The product of two rational numbers is −7⅔. If one of them is 3⅚, the other number is:

• 3

• −3

• 2

• −2

If (⁵⁄₆)⁵ × (⁶⁄₅)⁻⁴ = (⁵⁄₆)³ˣ, then the value of x is:

• ⅓

• ²⁰⁄₃

• −3

• 3

If 3⁴ × 9³ = 9ⁿ, then the value of n is:

• 5

• 7

• 10

• None of the above

If (ᵐ⁄ₙ)ˣ⁻¹ = (ⁿ⁄ᵐ)ˣ⁻⁵, the value of x is:

• 3

• −3

• ⅓

• −⅓

The value of [(¼)⁻² + (⅓)⁻²] ÷ (⅕)⁻² is:

• ¹⁄₂₅

• 1

• 0

• 625

If x = 3ᵐ and y = 3ᵐ⁺², then x⁄y is:

• 9

• ¹⁄₉

• 6

• 9

A number ends with 5 zeros. The number of zeros in its square will be:

• 5

• 25

• 10

• 8