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Find the units digit of 8^88.
Correct answer(s):
- 6
Find the units digit of 6^999.
Correct answer(s):
- 6
Find the units digit of 3^144.
Correct answer(s):
- 1
Find the units digit of 9^2025.
Correct answer(s):
- 9
Find the units digit of 7^2026.
Correct answer(s):
- 9
How many positive integers not exceeding 96 are relatively prime to 96?
Correct answer(s):
- 32
How many positive integers not exceeding 90 are relatively prime to 90?
Correct answer(s):
- 24
How many positive integers not exceeding 84 are relatively prime to 84?
Correct answer(s):
- 24
How many positive integers not exceeding 72 are relatively prime to 72?
Correct answer(s):
- 24
How many positive integers not exceeding 60 are relatively prime to 60?
Correct answer(s):
- 16
How many positive integers not exceeding 54 are relatively prime to 54?
Correct answer(s):
- 18
How many positive integers not exceeding 48 are relatively prime to 48?
Correct answer(s):
- 16
How many positive integers not exceeding 45 are relatively prime to 45?
Correct answer(s):
- 24
How many positive integers not exceeding 40 are relatively prime to 40?
Correct answer(s):
- 16
How many positive integers not exceeding 36 are relatively prime to 36?
Correct answer(s):
- 12
Find the sum of all positive divisors of 300.
Correct answer(s):
- 868
Find the sum of all positive divisors of 240.
Correct answer(s):
- 744
Find the sum of all positive divisors of 180.
Correct answer(s):
- 546
Find the sum of all positive divisors of 120.
Correct answer(s):
- 360
Find the sum of all positive divisors of 96.
Correct answer(s):
- 252