Math, asked by ArashAlfaz, 4 months ago

1!+2!+3!+...+25! divide by 13

Answers

Answered by ruby2214

Answer:

add = 324

then, divide by 13 = 25

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25=325

further when divided by 13=25

Attachments:

ArashAlfaz: can you please explain it?

ruby2214: yes

ruby2214: see we will substract the discount

ruby2214: sorry I started to explain another question

ArashAlfaz: ok

ArashAlfaz: it is not a simple addition

ArashAlfaz: it is a factorial addition

ArashAlfaz: do you know factorial

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