# invBinomial {#invbinomial}

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`invBinomial(trials, p, X)`

## Arguments {#arguments}

**trials** is a positive integer.

**p** is a floating number between 0 and 1.

*trials* and *p* are shape parameters.

**X** is a floating scalar or vector between 0 and 1.

## Details {#details}

Return the value of a binomial inverse cumulative distribution function.

## Examples {#examples}

```
invBinomial(10, 0.1, [0.1, 0.5, 0.9]);
// output: [0, 1, 2]

invBinomial(12,0.627, [0.1, 0.3, 0.5, 0.7, 0.9]);
// output: [5, 7, 8, 8, 10]
```

