Mathematics Formula Quiz

Product of two numbers =

• hcf * lcm

• hcf

• lcm

• 0

nth term of AP = ?

• a + n·d

• a + (n – 1)d

• d + (n – 1)a

• nd

Sum of n terms, Sₙ = ?

• n/2 [2a + (n – 1)d]

• n(a + d)/2

• n/2 [a + d]

• n(a – d)/2

Sₙ in terms of first and last term l = ?

• n/2 (a + l)

• n(a + l)

• (a + l)/2

• 2n(a + l)

Distance between (x₁, y₁) and (x₂, y₂) = ?

• √[(x₂ – x₁)² + (y₂ – y₁)²]

• |x₂ – x₁| + |y₂ – y₁|

• √[(x₂ – x₁)² – (y₂ – y₁)²]

• (x₂ – x₁)(y₂ – y₁)

Midpoint of (x₁, y₁) and (x₂, y₂) = ?

• (x₁ + x₂, y₁ + y₂)

• ((x₁ + x₂)/2 , (y₁ + y₂)/2)

• ((x₂ – x₁)/2 , (y₂ – y₁)/2)

• (2x₁ + x₂ , 2y₁ + y₂)

Slope of line joining (x₁, y₁) and (x₂, y₂) = ?

• (x₂ – x₁)/(y₂ – y₁)

• (y₂ – y₁)/(x₂ – x₁)

• (x₂ + x₁)/(y₂ + y₁)

• (y₂ + y₁)/(x₂ + x₁)

Pythagoras theorem: AC² = ?

• AB² + BC²

• AB² – BC²

• AC² + BC²

• AC² – AB²

Area of triangle using Heron’s formula = ?

• √[s(s – a)(s – b)(s – c)]

• (ab)/2

• (base × height)/2

• abc/4

Basic Proportionality Theorem: If DE || BC, then

• AD/AB = AE/AC

• AB/AD = AC/AE

• AD/AB = AC/AE

• AB/AC = AD/AE