What is 87 mod 7?

Often represented by the operator "mod", the modulo is a mathematical operation that gives the remainder of an integer division.

The result of 87 mod 7 is 3.

How to compute 87 mod 7?

The simplest approach is to use the "mod" operator (often denoted as "%" in many programming languages), but you could do it manually in the following way:

Remainder = N − ( M × ⌊ N M ⌋ )

(where N is the dividend, M is the divisor and ⌊ N M ⌋ represents the integer part of the quotient)

  1. 87 / 7 = 12.428571428571
  2. ⌊12.428571428571⌋ = 12 (We only keep the integer part)
  3. 7 × 12 = 84
  4. 87 - 84 = 3 (Subtracting gives us the remainder)

In short: 87 − (7 × ⌊87 / 7⌋) = 3

Is 87 divisible by 7?

A number is said to be divisible by another number, if the remainder of the division is zero.

Given that the result of 87 mod 7 is 3, this indicates that dividing 87 by 7 leaves a remainder of 3. Therefore, no, since the remainder isn't zero, 87 is not divisible by 7.