Mathematics
NULL
Medium
Question
There are four prime numbers in ascending order. The product of the first three is 385 and of the last three is 1001. Find the fourth number.
A
5
✓ Official correct answer
B
7
C
11
D
13
Community credibility
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A
5
No member explanations yet for this option.
B
7
No member explanations yet for this option.
C
11
No member explanations yet for this option.
D
13
No member explanations yet for this option.
Explanation
385 = 5 × 7 × 11 and 1001 = 7 × 11 × 13, so the primes are 5, 7, 11, 13. The fourth number is 13, not 5.