Question

Write the natural numbers 82 to 90. What fraction of them are prime number?


Find the greatest and smallest four digits number using the digits 9, 0, 2 and 4.

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Answer 1

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Natural numbers from 82 to 90 are 82 , 83 ,84 ,85, 86, 87, 88, 89 and 90.

Prime numbers:- Prime numbers are those which are divisible to 1 or themselves only.

Prime numbers from 82 to 90 are 83, 87 and 89.

Greatest 4 digit number using9, 0, 2, 4 = 9420

Smallest 4 digit number using 9, 0, 2, 4= We cannot keep '0' at first place like this 0249, so 0 will be at second place= 2049

Hope it helps you.....