Stage: 3 Challenge Level: 
Find the highest power of 11 that will divide 1000! exactly.
[Factorial 1000, written 1000!, is the product of the first 1000 whole numbers 1 x 2 x 3 x ... x 1000]
Modulus arithmetic. Divisibility. Multiplication & division. Prime factors. Factors and multiples. smartphone. Factorials. Working systematically. Properties of numbers. Workshop.
Published October 2000.
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