What is 87 mod 8?

How to compute 87 mod 8?

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:

$\mathrm{Remainder}=N-(M\times \lfloor \frac{N}{M}\rfloor )$

(where N is the dividend, M is the divisor and $\lfloor \frac{N}{M}\rfloor$ represents the integer part of the quotient)

1. 87 / 8 = 10.875
2. ⌊10.875⌋ = 10 (We only keep the integer part)
3. 8 × 10 = 80
4. 87 - 80 = 7 (Subtracting gives us the remainder)

In short: 87 − (8 × ⌊87 / 8⌋) = 7

Is 87 divisible by 8?

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 8 is 7, this indicates that dividing 87 by 8 leaves a remainder of 7. Therefore, no, since the remainder isn't zero, 87 is not divisible by 8.