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the remainder obtained when the expression 1!+2!+3!+.........+(95)! is divided by 15 is???????
PLS EXPLAIN!!!!
Hi Shivam,
Starting from 5! and furhter all the terms are divisible by 15.
So the given expression is 1! + 2! + 3! + 4! + 15K = 1+2+6+24+15K = 33+15K.
Hence the remainder will be 3, when the above is divided by 15.
Hope it helps.
Wish you all the best.
Regards,
Ashwin (IIT Madras).
sir ,
its quite an interesting que but i dint exactly get what u said!!
could u explain again!
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