How many multiples of 4 lie between 10 and 250?

Explanation

Multiple of 4 lie between `10` and `250` are,
`12,16,20,24...248`

So, it is an `AP` with starting term, `a=12` and difference, `d=4`

If ` n` is the total number of terms, then,

`a+(n-1)d = 248`

`12+4(n-1) = 248`

`4(n-1) = 236`

`n-1 = 59=>n=60`

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