exam Maths Puzzle Numerical Ability

Write as a product of primes: 1,000
Thank you.

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exam Other Question

simplify the following expression, show all work.

20x^2 y^12 z^13 .(5^2 y^3 z^3 x^12)^2 /25 x^3 y^31 z^11

evalute the expresssion when x=10, y=5, and z=2. show a
8 * 10 -4
__________
4 * 10 8