Question

Identify the missing term, 9,19,40,___,170. What will be the answer ?

Answer 1

`color(orange)83`

Explanation:

Equation:
`color(red)(2n+1, 2n+2, 2n+3,2n+4.......)`

`color(red)(2n+1)=2xx4+1=color(magenta)9`
`color(red)(2n+2)=2xx9+2=color(magenta)19`
`color(red)(2n+3)=2xx19+2=color(magenta)40`
`color(red)(2n+4)=2xx40+2=color(magenta)83`
`color(red)(2n+5)=2xx83+5=color(magenta)170`

`therefore` The missing number is `color(orange)83`

~Hope this helps! :)