Question

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

Answer 1

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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Answer 2

Heya !!

Here is your answer.

Given :
Sum of three Consecutive odd natural numbers is 69.
Let the first number be k.

Second Number= k +2
and Third Number= k + 4.

So, ATQ
k +( k + 2) + (k + 4) = 69
3k + 6 = 69
3k = 63
k = 21

K + 2 = 23
and k + 4 = 25.

Hence, the three numbers are 21, 23 and 25.
Out of these, the number which is prime is 23.

Hope It Helps