一道英语智力题Eachnumbershownbelowfollowacertainrule.Figureouttheruleandfillinthemissingnumber.January20April10May5November15July不要只是个答案!

Question

一道英语智力题
Each number shown below follow a certain rule.Figure out the rule and fill in the missing number.
January 20
April 10
May 5
November 15
July 不要只是个答案!

Answer 1

July 10.
规则就是 “月份单词中音节的数量,乘以5.”
This is a brain-teaser/math problem and has nothing to do with Holidays.
The rule is:"Take the number of syllables in the month and multiply by 5"
January (4 syllables) --> 20
April (2 syllables) --> 10
May (1 syllable) --> 5
November (3 syllables) --> 15
Answer:
July (2 syllables) --> 10
我昨天想了很久,只是想到都是5的倍数这个规律,
觉得跟字母的长度有关（越长,音节越多）,但不完全符合.
后来还是请google大神出马解决了.