Question

sum of three consecutive odd natural number is 69 find the prime number out of these numbers

Answer 1

Let the three consecutive odd numbers be 'x', 'x+2' and 'x+4' respectively.

A/Q---->
x + x + 2 + x + 4 = 69
3x + 6 = 69
3x = 63
x = 21

The numbers are --->
x = 21
x + 2 = 21 + 2 = 23
x + 4 = 21 + 4 = 25

Among 21,23 and 25 it is found that 23 is a prime number.

So your required answer is 23.

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Answer 2

Let the no. be x, x+2 & x+4.

ATQ,
x+x+2+x+4 =69
3x+6 =69
3x =69-6
3x =63
x=63/3
x=21

Thus,
x=21
x+2=23
x+4=25

Prime no. is 23..

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