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Category Elimination - Numbers (Hard Version)

In each group, name any answer which matches the first category to reveal the second category, then name any answer which applies to both categories to reveal a third, and so on.
You will get a hint on the last prompt of a category
None of these are going to require tedious math (e.g. 37 * 29). Remember to try easy cases first like 37*2*5 = 37*10 = 370.
# = the number of answers possible. Answer must correspond to the highlighted yellow box.
Quiz by Dollyfroggy
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Last updated: August 24, 2022
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First submittedJuly 22, 2022
Times taken570
Average score70.0%
Rating4.50
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Green Categories
1000
Integer between 0 and 1000
63
... with its digits adding up to 10
39
... that shares a factor with 60
14
... with a 0
1
... that is a multiple of 27
640
What can you multiply 2^7 by to get a 0 in it?
 
Orange Categories
120
3-digit integer with digits in descending order
56
... with no consecutive numbers
28
... with a two-digit largest prime factor
18
... not starting with 9
1
... with a largest prime factor between 80 and 90
830
What two one-digit numbers would make it really easy to try different primes?
Blue Categories
34
Year from 1950 to 2020 that no country joined the UN in
18
... that is odd
7
... with all unique digits
3
... that is a multiple of 3
1
... but doesn't end in 3
2019
The last country to join was in 2011, see if any recent years work.
 
Purple Categories
59
Integer with 4 factors between 1 and 200
30
... with two non-zero digits
17
... that is not divisible by 2
4
... with only one-digit prime factors
1
... that has only one prime factor
27
How can a number have 1 prime factor but 4 factors?
2 Comments
+3
Level 58
Aug 24, 2022
"Year from 1950 to 2020 that no country joined in" - specify WHAT no country joined in.
+1
Level 60
Aug 24, 2022
Oops! Thank you.