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PolarNik [594]
4 years ago
12

What number is needed to complete the pattern below? 66 73 13 21 52 __ 10 20

Mathematics
1 answer:
Free_Kalibri [48]4 years ago
7 0
Put the numbers in pairs and find the differences.

73-66= 7
21-13= 8
? -52= ?
20-10= 10

The difference should increase by one each time. The missing difference is 9 (7, 8, 9, 10).

? -52= 9
61-52=9

Final answer: 61
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The value of the factorial is 5!4!/7!2! = 2/7

<h3>What is factorial?</h3>

The product of all positive integers less than or equal to a given positive integer and denoted by that integer and an exclamation point.

Given:

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= 5!* 4*3*2!/7*6*5!*2!

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Hence, 5!4!/7!2! = 2/7.

Learn more about factorial here:

brainly.com/question/1357774

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