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CBSE Class 11-commerce Answered

Let p(n): n(n+1)(n+2) is divisible by 12 then the numbers which does not satisfy by p(n) are in A arethmetic progession B odd numbers C prime numbers D GP please explain the answer with suitable reason.
Asked by deepakagarwal1024 | 12 Jun, 2018, 06:38: PM
answered-by-expert Expert Answer
n=1, P(n)=6
n=2, P(n)=24
n=3, P(n)=60
n=4, P(n)=120
n=5, P(n)=210
n=6, P(n)=336
n=7, P(n)=504
n=8, P(n)=720
n=9, P(n)=990
n=10, P(n)=1320
n=11, P(n)=1716
2,3,4,6,7,8,10......satisfes
1,5,9,13,17........does not...........so AP and odd numbers

Answered by Arun | 13 Jun, 2018, 10:16: AM

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