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| 1. |
Is -150 a term of an AP 11,8,5,2 |
| Answer» Let an=-150,,, a=11,d=-3,,,,,an=a +(n-1)d,,,,-150=11+(n-1)-3,,,,,-150=11-3n+3,,,,,-150=14-3n,,,,-150-14=-3n,,,-3n=-164,,,3n=164,,,n=164/3,,,,n=54*2/3,,,,,Since, n can\'t be a negative, fraction or come in decimal. Therfore.,it is not a term of an AP(,,,,,,, =second line) | |