Question

there are four prime number written in ascending order off magnitude.the product of first three is 7429 and last three is12673 find the first number​

Answer 1

Answer:

Let the four prime numbers, in the ascending order of magnitude are a, b, c and d.

Given that the product of the first three is 7429 and of the last three is 12673

So a×b×c = 7429

b×c×d = 12673

Divide them:

\begin{gathered}\frac{a \times b \times c}{b \times c \times d} = \frac{7429}{12673} \\ \\ \frac{a}{d} = \frac{17}{29}\end{gathered}

b×c×d

a×b×c

=

12673

7429

d

a

=

29

17

Thus the first number is 17

The fourth number is 29

The middle two numbers are 19 and 23.

So your answer is B. 29

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