A number theory problem by Parth Bhardwaj

Let k=1!+2!+3!+4!+5!+6!+7!+8!+.................94!+95!+96!+97!+98!+99!+100!k=1!+2!+3!+4!+5!+6!+7!+8!+.................94!+95!+96!+97!+98!+99!+100! Find the product of last 2 digits of k2k^2

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