WHAT IS 643=4X160+N

1 answer:

6 0

Step 1. Simplify 4 x 160 to 640

643 = 640 + n

Step 2. Subtract 640 from both sides

643 - 640 = n

Step 3. Simplify 643 - 640 to 3

3 = n

Step 4. Switch sides

n = 3

Done! :) So 643 = 4 x 160 + 3

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This is a Combination problem.

Combination is a branch of mathematics that deals with the problem relating to the number of iterations which allows one to select a sample of elements which we can term "<em>r</em>" from a collection or a group of distinct objects which we can name "<em>n</em>". The rules here are that replacements are not allowed and sample elements may be chosen in any order.

Step-by-step explanation:

Step I

The formula is given as

$C (n,r) = \frac{n}{r} = \frac{n!}{(r!(n-r)!)}$